Please solve this to me I will give you brainest and hundred points

Could somebody me with this radical simplification?

What is the rate for one gallon of gasoline

Afunction, f(x), represents the height of a plant x months after being planted. students measure and record the height on a monthly basis. select the appropriate domain for this situation. a. the set of all positive real numbers b. the set of all integers oc. the set of all positive integers od. the set of all real numbers reset next