You and your friend get the same magazine. you spend $15 for twelve issues. your friend pays $1.50 per issue but gets the first two issues free. how many issues will your friend get if he also spends $15?

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.