You are comparing two pluming companies. P&G pluming charges $200 for parts and $50 per hour for
labor. GM plumbing charges $40 per hour for labor and $250 for parts.
1. Write an equation for both companies.
y = mx + b
y=50x+ 200
y=48x+250
2. When will the two companies be the same? Meaning how many hours of work will both
companies charge the same amount of money. Show a justification using the equations above.
(=)
50x+200 = 40x+250
200
45
-200
40x+50= =
40X
1
GM
part 200 250
hourt so
40
M
50x
-10
10x
3. If you were allowed to change one thing about the prices of the companies, what would you
change so that this scenario has no solution?
4. Which company is better if the job will take 4 hours? Justify.