Probably brand A because it weights the least amount so then you can get more shingles in one lift since it needs to be at the most 650 pounds per lift.
P=2(L+W)
L=2/3x+10
W=1/3x+5
P=2(2/3x+10+1/3x+5)
P=2(2/3x+1/3x+10+5)
P=2(3/3x+15)
P=2(x+15)
P=2x+30
Y= 3 which would be choice A, because both equations are going to be set equal to eachother, so with that you would put

subtract 5y from 7y, and add the 3 from the left to the 3 on the right. this would leave you with 2y=6 so in this case you would divide both sides by two to get the answer of 3 which is choice A.
Answer:
C.) Interest On A Home Mortgage.