If y varies directly as x, and y = 12 when x = 15, find x when y = 21.

Ising prime factorization to find lcm and gcf of 10,72

Which expression is the factorization of x2+10x+21

Original price = $55.00 Discount %=25% Sale price =

4000 principal earning 7% compounded annually, 7 years

What is the exact value of cos 45° as found on the unit circle?

A tub of water is emptied at a rate of 3 gallons per minute. The equation y - 12 = - 3 (x - 1) models the amount of water remaining, where x is time (in minutes) and y is the amount of water left (in gallons).

Solve. If there are X teams in a sports league and all the teams play each other twice, a total of N (x) gamers are played, where N (x) = x^2-x. A soccer league has 10 teams, each of which plays the others twice.

Jake has piece of yarn that is 4 feet long. Blair has a piece of yarn that is 4 inches long. Who has the longer piece of yarn?

How to solve 6p^2-42p-48

Lie needs 15 pieces of string 1/2 of an inch long. She cut a 6 inch piece of string into pieces that are each 1/2 of an inch long. How many more pieces of string does she need?