Help me out, please.

Bob’s bank charges him a $3.15 service fee every time he uses an out-of-network atm. if bob uses an out-of-network atm an average of three times every two weeks, how much will he pay in service fees over the course of a year? a. $327.60 b. $109.20 c. $491.40 d. $245.70 select the best answer from the choices provided a b c d

Ten times the square of a non-zero number is eqaul to ninety times the number

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5