Which expression is not equivalent to the other three?
a) −9 − 7n + 16n
b) 9(n − 9)
c) n − 9 + 8n
d) 9n − 9

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?