Ron finds 9 books at a bookstore, he can only afford 5 of them. In how many ways can he make his selection? how many ways can he make his selection if he decides one of them is a must?

Evaluate z/5 + 2 for z=10

5x + 9y, when x=8, y=11

Find an equivalant expression for the following squares of binomials. (5x+1) ^2

X^2+13x-30 find the vertex

How many times larger is the value of 170 000 than 170?

Arnold began working at a coffee shop on April first. Ms. Ware, his new boss, told Arnold he would earn $2,500 each month if he worked 160 hours. One month later Arnold received his paycheck in the amount of $2,150.

Evaluate a - b if a = - 2 and b = - 7

Which expression is equivalent to (x^1/2y^-1/4z) ^-2

A store pays $75 for an aquarium, the markup is 20% what is the selling price?

What is 5/5/8 divided by 1/2/9 in simplest form