If the circumference of a circle is doubled, how does the area of the circle change? a) the area is doubled. b) the area is tripled. c) the area is quadrupled. d) the area does not change.

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.