Blue book test math questions..need help!

khoitrinh
Sun, 17 Aug 2008 19:59:19 +0000

15

The x value of the interesctions have to be 6 apart, so the x values are -3 and 3.
y = 3^2 = 9
So y = a-3^2 must also equal 9.
9 = a - 9
18 = a

So the answer is E.

16

Set z has all of x and all of y, but not the duplicates, k.
So set z =x+y-2k because the duplicate members were counted 2 times.

So the answer is D.