A basketball player made 80 out of 100 attempted free throws. What percent of free throws was​ made? I need a correct answer asap!

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

How can you tell when x and y are not directly proportional?