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May 25, 2015

Homework Help: SAT Math?

Posted by Lacey on Sunday, October 14, 2007 at 9:55pm.

I'm working on a couple of SAT math programs for school, and I have trouble figuring some out.

1. Joe is 3 years younger than Kate. If n represents Nora's age now, what was Kevin's age 4 years ago, in terms of n?

A. N + 7
B. N + 1
C. N - 1
D. N - 4
E. N - 7

2. If (x + y)^2 - (x - y)^2 = 84 and x and y are positive integers, which of the following could be a value of x + y?
A. 10
B. 12
C. 14
D. 16
E. 18

Thanks so much in advance!

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