Given the following diagram, determine the scale factor of the dilation that maps trapezoid BCDE to
trapezoid B'C'DE'.
A.1/2
B. 2
C.3/5
D.5/3

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

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?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?