At an online bookstore Alicia downloads 3 books for $9

Iam so stuck. what is the worked out answer for this question?

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

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.