Which shape do you use to set up the proportion for similar shape?

Through: (-3,-3) parallel to y= 7/3x+3

List the sides of δrst in in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days