Brett is joining a new gym. he can join power plus or heavy hulk. at power plus, it will cost $34.06 per month, plus a sign-up fee of $20.00. at heavy hulk, it will cost $34.31, plus a sign-up fee of $32.50. right now, heavy hulk is cutting their sign-up fee in half for new members. if brett signs up at a gym today, after how many months will the cost of the memberships be the same?

a. 50
b. 12.25
c. the cost will never be the same.
d. 15