Ellis can spend up to $40 for gasoline and a carwash at a service station. The carwash will cost $6.00, and gasoline costs $4.50 per gallon. The inequality below can be solved for g, the number of gallons of gasoline Ellis can buy. 4.5g + 6 ≤ 40
A. Ellis can buy over 10 gallons of gasoline.
B. Ellis can buy at most 7 gallons of gasoline.
C. Ellis can buy 6 gallons of gasoline but not 7 gallons.
D. Ellis can buy 7 gallons of gasoline but not 8 gallons.