... Substitute 3 for x and solve for y:y = –( 3) 3 + 3( 3) – 3 y = –(–27) – 9 – 3 y = 27 – 12y = 15ᎏ5245ᎏᎏ66 – ᎏ9265ᎏᎏ6– PRACTICE TEST 3 –240 13. c. There are ten coins in the bank ... follow the test. Make note of the kinds of errors you made and review the appropriate skills and concepts beforetaking another practice test. CHAPTER Practice Test 3 This practice test is a simulation ... for xand 5 for y: (3 xy+ x)ᎏxyᎏ=( (3) (2)(5) + 2)ᎏ25ᎏ= (30 + 2)ᎏ25ᎏ= 32 ᎏ25ᎏ= (͙5 32 ෆ)2=22= 4. Or, 3( 2)(5) = 30 , 30 + 2 = 32 , the 5th root of 32 is 2, 2 raised to...