12 x times 8 equals 96 and 180 subtracted by 96 equals 84
The volume of a cylinder is given by the product of its base area (i.e. the area of a circle) and its height:

Solving for r, we have

Plugging the numbers, we have

A is the answer to your question
The answer would be B because in the question it says the price tripled (3x) and that it rose another $0.75 (+0.75). It also says at least $4.50, meaning it could be 4.50 or more than 4.50. So, it's