A pack of gum costs 75 cents. That is 3 cents less than three times what the pack cost 20 years ago. Which equation could be used to find the cost of the gum 20 years ago?
Responses
A 3 - 3x = 753 - 3x = 75
B 3x + 3 = 753x + 3 = 75
C 0.3x - 0.3 = 0.750.3x - 0.3 = 0.75
D 3x - 0.03 = 0.753x - 0.03 = 0.75
E 0.03x - 0.3 = 0.75