Helppp plez i dont get it

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.