... lived in a family.
8) We have only little time for this exercise, but in the examination we'll have even
time.
9) Lucy is clever, but Carol is than Lucy.
10) Have you visited the old castle? ... that one is .
9) We live in a small house, but my grandparents' house is even than ours.
10) Yesterday John told me a funny joke. This joke was the joke I&apos ;ve ever
heard.
1) My father ... tính từ trong ngoặc
1. My house is (big) than yours.
2. This flower is (beautiful) than that one.
3. This is the (interesting) book I have ever read.
4. Non-smokers usually live (long)...
... diễn tả sự phê phán
(judgements) hay thái độ (attitudes) ví dụ như: lovely,
perfect, wonderful, silly…đặt trước các tínhtừ khác.
Ví dụ:
• a lovely small black cat.
(Một chú mèo đen, nhỏ, đáng ... tắt:
“OpSACOMP”, trong đó:
Opinion - tínhtừ chỉ quan điểm, sự
đánh giá. Ví dụ: beautiful, wonderful, terrible…
Size - tínhtừ chỉ kích cỡ. Ví dụ:
big, small, long, short, tall…
Age - tínhtừ chỉ độ tu i. ... beautiful big black eyes. (Một đôi mắt to, đen, đẹp
tuyệt vời)
này như thế nào?
- tínhtừ đỏ (red) chỉ
màu sắc (Color)
- tínhtừ mới (new)
chỉ độ tu i (Age)
- tínhtừ sang trọng
(luxurious) chỉ...
... to 2001 =
1.54 − 1.88
1.88
=−0.18 =−18%
.
c. Convert the CPI into 1990 = 100 and determine the real price of butter in 1990
dollars.
To convert the CPI into 1990=100, divide the CPI for each ... all over the
United States. Therefore the market for fast food is a national market.
This statement is false. People generally buy fast food within their current
location and do not travel ... United States just to buy
a cheaper fast food meal. Given there is little potential for arbitrage
between fast food restaurants that are located some distance from each other,
there are likely to...
... are the prices of natural gas and oil, respectively. Also, verify that
if the price of oil is $8.00, these curves imply a free market price of $2.00 for natural
gas.
To solve this problem, we ... curves imply a free market price of $2.00 for
natural gas. Substitute the price of oil in the supply and demand curves to verify
these equations. Then set the curves equal to each other and solve ...
E
p
AVE
=
P
97
+
P
98
2
Q
97
+
Q
98
2
Δ
Q
Δ
P
=
10.415
72.5
(
−
38.5)
=−
5.53.
To derive the demand curve for instant coffee, note that the slope of the demand
curve is -38.5=-b. To find the coefficient a, use either of the data points from the
table above so that a=75+38.5*10.35=473.5...
... indifference curves are
horizontal lines. Her satisfaction increases in the upward direction.
hamb urger
soft drin k
c. Bob loves hamburgers and dislikes soft drinks. If he is served a soft drink, ... annual travel budget
is $4,000.
a. Illustrate the indifference curve associated with a utility of 800 and the indifference
curve associated with a utility of 1200.
The indifference curve with ... 10FC=1200, or FC=120. Some bundles on this indifference curve
are (12,10), (10,12), (3,40), and (40,3). For Erin, this bundle gives her a utility
of 2880, so her indifference curve is given by the equation...
... her indifference curves are L-shaped. Intuitively if the two goods are
complements, there is no reason to substitute one for the other during a price change because they
have to be consumed in ... The demand curves
for the general public (
Q
gp
) and students (
Q
s
) are given below.
Q
gp
= 500 − 5P
Q
s
= 200 − 4P
a. Graph the two demand curves on one graph, with P on the vertical axis ... -2, so a 10 percent increase in price will reduce the quantity sold by 20
percent. For disk drives, E
P
= -1, so a 10 percent increase in price will reduce sales by 10 percent.
Sales revenue...
... one hand, Treasury bills now have a higher
return and so are more attractive. On the other hand, the investor can now earn a
higher return from each Treasury bill so could hold fewer Treasury ... to whoever invents such a mayonnaise substitute first. Sam’s
SCAM seems like a very risky proposition to you. You have calculated his possible returns
table as follows.
Probability Return
.999 ... moderately risk-averse investor has 50 percent of her portfolio invested in stocks and
50 percent invested in risk-free Treasury bills. Show how each of the following events will
affect the investor’s...
... The slope increases (in absolute value terms) as we move up the
isoquant. The isoquant is therefore convex and we have diminishing marginal
rate of technical substitution.
b. A firm finds they ... technical substitution,
MRTS,
is the absolute value of the slope
of an isoquant. If the inputs are perfect substitutes, the isoquants will be linear. To
calculate the slope of the isoquant, and ...
output. When we are at the bottom end of the isoquant we have a lot of full time
workers and few part time workers. As we move up the isoquant and give up full
time workers, we must hire more...
... U-shaped AC curve, the
second derivative of the average cost curve must be positive.
The first derivative is c + 2dQ; the second derivative is 2d. If the second derivative
is to be positive, then ... and 5 respectively.
Graphically illustrate this situation on a graph using isoquants and isocost lines.
The isoquant is convex. The optimal quantities of labor and capital are given by
the point ... U-shaped long-run average cost curves, a must be zero, b and d must
be positive, c must be negative, and 4db > c
2
. However, the conditions do not insure
that marginal cost is positive. To insure...
... Competitive Supply
108
is everywhere above average variable cost so the firm will supply positive output
at any positive price.
e.
At what range of prices will the firm earn a negative profit? ... Exercise 1.
a. Derive the firm’s short-run supply curve. (Hint: you may want to plot the appropriate
cost curves.)
The firm’s short-run supply curve is its marginal cost curve above average variable ...
curve is its marginal cost curve above average variable cost and that marginal cost
Chapter 8: Profit Maximization and Competitive Supply
102
CHAPTER 8
PROFIT MAXIMIZATION AND COMPETITIVE...
... for gasoline. We may analyze the effect of the tax on gasoline in
the same manner as the tax on automobiles. However, the gasoline tax is a per unit
or specific tax, so the demand curves exhibit ... demand curve be of the general form Q=a+bP and the supply curve be of
the general form Q=c+dP, where a, b, c, and d are the constants that you have to
find from the information given above. To ...
E
P
D
=
P
Q
Δ
Q
Δ
P
.
You are given information about the value of the elasticity, P, and Q, which means
that you can solve for the slope, which is b in the above formula for the demand
curve.
−0.4 =
2
23.5
ΔQ
ΔP
ΔQ
ΔP
=−0.4
23.5
2
⎛...
... marginal revenue curve.
To find the marginal revenue curve, we first derive the inverse demand curve. The
intercept of the inverse demand curve on the price axis is 18. The slope of the
inverse ... output, and price.
The average revenue curve is the demand curve,
P = 700 - 5Q.
For a linear demand curve, the marginal revenue curve has the same intercept as the
demand curve and a slope that ... ceiling price is set above the competitive price the ceiling price is equal to
marginal revenue for all levels of output sold up to the competitive level of output.
Substitute the ceiling price...