Jeffery ran 2 1⁄4 miles in 45 minutes. How far can he run in an hour?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?