What is the answer for 6a-5a+9+10

It takes a total of 6 hours to fill up an inground backyard pool using a standard house. a function can represent this situation to represent the amount of water in the pool until it is full a function of time the hose is running. determine the domain for the function

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?