If f (x) = x^2-15 and f (a) = 49, what is the value of a? Explain.

pencils come in a package of 10. Eraser come in a package of 12. Philip wants to purchase the smallest amount of pencil and eraser so that he'll have exactly 1 eraser per pencil how many packages of pencils and erasers should Phillip buy.

Write the equation of the line shown in slope-intercept form. AND: Standard form (-1,2) (1,4)

Brody deposited $500 into an account that earns 4.2% interest compounded annually. He makes no additional deposits and no withdrawals.

Find the prime factorization of45

If 12 pens cost 3.48 how much do 20 cost

Name a fraction equivalent to 2/3

The teacher has 15 gold prize ribbons, 22 blue ribbons, and 5e red ribbons. There are 12 boys and 18 girls in the class.

3 (6x^2-5x+7) - 2 (-4x^2+8-10)

A model ship is built to a scale of 1 centimeter: 5 meters

Simply: x^3 y^3 / x^3 y^2 (the arrows mean to the power of the number)