Answer:
75?
Step-by-step explanation:
is there more to the question?
i'm sorry but can you put in more details as to what each item costs, if it is just variables then it should be something like b times the amount bought plus c times the amount bought. without the costs i cannot actually give you how much she spent
Answer:
3x+y=-31
Step-by-step explanation:

Slope of perpendicular line is -3.

Sub in the point (10, -1)

(10x4x5)+(5x5x5) because you could make 2 shapes out of it. one being a cude that is 5x5x5 and the other being a rectangle that is 4x10x5 thenyou would just add them together. :) hope that helps