Answers and Explanations
ALGEBRA FOLLOW-UP TEST
1 . B
Plug y = –2 into the first equation:
x = 3− y^2 = 3−(−2)^2 = 3−4 = −1
2 . A
The sum of four identical quantities is 4 times one of those quantities, so
the sum of the four terms 2x is 4 times 2x:
2 x + 2x + 2x + 2x = 4(2x) = 2^2 (2x) = 2x+2
3 . E
Factor the top and the bottom and cancel the factors they have in
common:
4 . B