Percy works two part-time jobs to pay for college classes. on monday, he works 3 hours at the library and 2 hours at the coffee cart and earns $36.50. on tuesday, he works 2 hours at the library and 5 hours at the coffee cart and earns $50. his hourly wage at the library, x, and hourly wage at the coffee cart, y, can be determined using the system of equations below. 3x + 2y = 36.50 2x + 5y = 50.00 at which job does percy earn the greater hourly wage? how much does percy earn each hour at this job? a) percy earns a greater hourly wage of $7.00 at the library. b) percy earns a greater hourly wage of $7.00 at the coffee cart. c) percy earns a greater hourly wage of $7.50 at the library. d) percy earns a greater hourly wage of $7.50 at the coffee cart.