Answer:
E
Explanation:
-3.50*1+40 = 36.50
If you use a you will come out with your answer being more than what was originally on the card.
If you use b you will come out with your answer being more than what was originally on your card.
If you use c your answer will come out as a negative.
If you used D your answer will come out as a negative.
and
If you use E your answer will come out at the right answer because lets say she bought one drink. That takes 3.50 off the card leaving 36.50. so -3.50*1+40
-3.50+40
36.50
The equation is written weird making us think that it is wrong.