I need help on this question

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.

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

What is the lcm of 16 and 40 ? 24 and 40 ?