(5a+3)AND(7a+4) please explain too!

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

Divide. write in simplest form 41/6 divided by 10

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?