Raphael is twice as old as his sister. The sum of their ages is less than 30. What is the greatest age Raphael sister can be?

A. 20 years old

B. 15 years old

C. 9 years old

D. 10 years old

5. At a certain university the student to teacher ratio is 16:1. If there are 2,000 students enrolled, how many teachers must be employed to maintain this ratio?

Earl gets a commission of 20% on all sales. He sold $2,580.00 worth of goods. What was the amount of his paycheck?

Solve the Quadratic Equation by factoring. 3r^2-16r-7=5

In which of the following graphs is the runner running the fastest?

In 1991, the moose population in a park was measured to be 4360. By 1999, the population was measured again to be 5880. If the population continues to change linearly, a. Find a formula for the moose population, P. b.

What does 16/6 equal to as a whole number

How do you find the perimeter of a triangle?

What is 120 divided by 3/5

Mr. and Mrs. Pierotti are remodeling their kitchen. They need 9 square yards of covering for the floor. Jackson Interiors quoted them a price of $81 for 9 square yards of linoleum. Carpet Master told them that carpeting would cost $6 per square yard.

Which is an equation of the given line. 2,-3 and - 4,3