Michael has to paint a house whose size is 2,800 square feet. he used 5 gallons of paint to cover 1,750 square feet.

how many more gallons of paint will he need to cover the remaining area?

Hi Alex !
    5            1.750
    x            2.800
1750x = 5*2800
x = 14.000/1750 
x = 8 
As he had already used 5 gallons , then , will be left only 8 - 5 = 3
R : 3 gallons
   

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

The answer would be $68.04