Elyse has earned scores of 87, 91, 90, and 85 on her first four math tests. If she wants to have a mean of 90, what must she earn on the fifth test?

Factor the perfect square trinomial completely. 7w^2-84w+252 ive got an idea how to solve it, but i need double checking

a quarter weighs about 0.2 ounce. Naoki has 2 pounds (32 ounces) of quarters. About how many quarters does he have?

Suppose you pay $29.25 for a pair of shoes that has been discounted 35%. What is the original price of the shoes? Show how you identify what you are looking for, set up an equation, arrive at your answer, and check your work.

A computer store bought a program at a cost of $10 and sold it at a selling price of $14. Find the percent markup.

It's for pre-algebra 6x=24

You and a friend buy two fruit smoothies and leave a tip. You split the total and your half cokes to 3.60. What percent tip (in decimal form) did you and your friend leave if the fruit smoothies cost $3 each?

Terry deposit of $520 into your bank account that run simple interest each year after five years she had earned $156 in interest if no money was deposited into or withdrawn from the account what was the annual interest rate

Solve the system of equations by elimination. 2x-y+3z=-12x-y+3z=-1 x+2y-4z=-1x+2y-4z=-1 y-2z=0y-2z=0

Change 0.56 radians into degrees and minutes.

Evaluate 4P3 24 7 10 12