So this is the pic that i took cause the first one was blurred

Ineed i do not understand i'm only 8

41/2 - 1 1/3 what is the answer as a fraction?

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.