Bobby has 3 times as many spaceships as his friend. Bobby has 21 spaceships. How many spaceships does his friend have?

A sofa regularly sells for 680. The sale price is 639.20. Find the percent decrease of the sale price from the regular price.

The Greens want to put an addition on their house 18 months from now. They will need to save $10,620 in order to achieve this goal. They set aside the same amount each month, and after a year discover they have saved $6,120.

On a number line, between which two consecutive whole numbers would the square root of 70 be located? prove work/show work

P and q are prime numbers. p3 x q = 56. Find p and q.

If you drive 14 miles and your friend drives 5 7/10 miles. How much farther do u have to drive than your friend

If Sam paid $48 for shoes that were regularly priced at $90, what was the percent discount of the sale?

What dose it mean to do when it says find the rule

Explain how to find the median.

Jacob, who is four years old, decides to walk on the conveyor belt in the "wrong" direction (that is, in the direction opposite to which he would travel if standing still).

A circle has a 10 centimeter radius. Find the area of the circle to the nearest tenth. (Use 3.14 for?)