20 POINTS! Please help

For each question, decide if it is a function. Then find the domain and range in set builder notation.

Which function has the domain x> -11

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red