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?
A)
0.3x -0.3 = 0.75
B)
0.03x -0.3 = 0.75
3x -0.03 = 0.75
D)
3 - 3x = 75