Astore is selling blank cds in packages of 25 for $5. write and solve a multiplication equation to find the cost of one blank cd.

Use the numbers in the multiplication equation 45 x 1/9 =5 to write a division equation involving division by a fraction.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?