A toy car has a scale factor of 1/40. The diameter of the toy car’s tire is 5/8 inches. What is the diameter of the actual car’s tire?

  Brett is jumping on a trampoline in his backyard. Each jump takes about 2s from beginning to end. He passes his bedroom window, which is 4m high, 0.4s into each jump. By modelling Brett’s height with a quadratic relation, determine his maximum height.