Please can i get help

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.

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30