I am taking a test in two weeks. I need to review the following sample questions. Can someone help me?

(1) Rectangle ABCD lies in the xy-coordinate plane so that its sides are not parallel to the axes. What is the product of the slopes of all four sides of rectangle ABCD ?

A. -2

B. -1

C. 0

D. 1

Question 2.

Let the function f be defined by f (x) = x 2 + 18. If m is a positive number such that f (2m) = 2 f (m), what is the value of m?

A. 2

B. 3

C. 1.5

D. 4

Question 3.

The cost of maintenance of an automobile increases each year by 10%, and Andrew paid $300 this year for maintenance on his automobile. If the cost c for maintenance on Andrew's automobile n years from now is given by the function c(n) = 300x n ,what is the value of x ?

A. 0.1

B. 0.3

C. 1.1

D. 30

(4) If n and p are integers greater than 1 and if p is a factor of both n +3 and n +10, what is the value of p ?

A. 3

B. 7

C. 10

D. 13