A house-painting company charges 376 dollars plus 12 dollars per hour. another painting company charges 280 dollars plus 15 dollars per hour.
a. how long is a job for which both companies will charge the same amount?
b. what will that cost be?

Question

A house-painting company charges 376 dollars plus 12 dollars per hour. another painting company charges 280 dollars plus 15 dollars per hour.
a. how long is a job for which both companies will charge the same amount?
b. what will that cost be?

anonymous · Answer

y=12x+376
y=15x+280

find the intersection, do you know how to do that?

anonymous · Answer

if you don't have a calculator, just solve by substitution
15x+280=12x+376
3x=96
x=32
so after 32 hours

anonymous · Answer

then put in 32 for x... 
15(32)+280=$760.00

anonymous · Answer

Thanks!

anonymous · Answer

anytime