Question

Please Help Maria is comparing the prices of two window cleaning companies. Company A charges $6 per window and an additional $12 as service charges. Company B charges $5 per window and an additional $15 as service charges.
Part A: Write equations to represent Company A's and Company B's total charges for cleaning a certain number of windows. Define the variable used in the equations. (4 points)

Part B: Which company would charge less for cleaning 8 windows? Justify your answer. (3 points)

Part C: How much money is saved by using the services of Company B instead of Company A to clean 6 windows? (3 points)
(10 points)

Answer 1

A:  company A: 12+6n, company B: 15+5n      n=number of windows

B: Company A:  12+6(8)=$60, Company B:  15+5(8)=$55
    company B charges less

C: Company A:  12+6(6)=$48, Company B: 15+5(6)=$45
 $48-$45=$3 less to use Company B instead of Company A

Answer 2

For part a:
lets say they are both cleaning 10 windows. company a would charge 72 dollars (including the extra 12) and company b would be 65 dollars.   $72 > $65

for part b: company b would be less because 8 x 5 = 40 + 15 = 55 and company a would be 6 x 8 = 48 + 12 = 60 and as you can see 60 is greater than 55

for part c:
3 dollars because 48 minus 45 is 3