Betty Donahue is choosing between two fitness centers. Center A charges $375 per year for unlimited use of all facilities. Center B charges a $35 sign up fee, a $12 monthly fee, and $5 per aerobics class. If Betty goes to aerobics once a week, which club is least expensive for her to use for a year

Center A : 375 per yr

Center B : 35 + 12 (12) + 5 (52) = 35 + 144 + 260 = 439 per yr

I multiplied 12 * 12 because it was $ 12 a month and there are 12 months in a yr. I multiplied 5 * 52 because each aerobic class is $ 5 per class, and she went once per week, and there are 52 weeks in a yr.

so the cheaper one is Center A

Fitness Center A is cheaper than Fitness Center B!