Need help with this equation

What is the measure of angle afe? 79 81 91 99

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

What are the domain and range of the function f(x)=2^x+1