Find the inverse function f-1(f)x

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top