The computer game Peter wants to buy will cost at least $50 and not more than $70. He earns $3 an hour running errands for his g
randmother. Which inequality shows the number of hours, n, he will have to work to pay for the game? A. 3n ≥ 20
B. n/3 ≥ 20
C. 50 ≤ 3n ≤ 70
D. 50 ≤ n/3 ≤ 70