Blue book test math questions..need help!

khoitrinh
Sun, 17 Aug 2008 19:46:47 +0000

12

Since f(x) is linear, a+x = 24 = b-x
a = 24-x
b = 24+x
a+b = 48+x-x = 48

So the answer is C.

13

Do some of the pattern on paper. You will notice the pattern.
3,5,-5,-3,3,5,-5,…
The pattern is obvious. It repeats every 4 terms so the 52nd term is the same as the 4th term. The 55th is the same as the 3rd term.

So the answer is A.

14

m = -y for reflections accross the x-axis.
Just flip all the signs for the equation.

So the answer is A.