What three things must be true in order for two figures to be similar?

(written response)

The table shows the distance traveled over time while traveling at a constant speed.

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles