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 ?
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?
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 ?
(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 ?