Gabby is working over the summer to save money for college. She earns $15 per hour working at a coffee shop and $12 per hour working at a gym. She can work at most 40 hours per week and needs to earn at least $500 per week.

Given Gabby's constraints, which pairs (c,g) represent possible numbers of hours she could work at the coffee shop, c, and at the gym, g?

a) (16,16)
b) (8, 32)
c) (20,20)
d) (12, 24)

multy choice