Farrah needs an electrician and must decide between 2 companies. For a service visit, Company A charges $50 to send an electrician plus $40/h. Company B charges $60 to send an electrician plus $36/h. The graph that models this situation is shown here.

According to the graph, how long must each electrician work in order for the two to charge equal amounts?

http://static.k12.com/calms_media/media/1514000_1514500/1514177/3/ca91333a7cd287feb8c9dc093332a57ec62d7821/MS_IMC-1400806-100591.jpg

Question

Farrah needs an electrician and must decide between 2 companies. For a service visit, Company A charges $50 to send an electrician plus $40/h. Company B charges $60 to send an electrician plus $36/h. The graph that models this situation is shown here.
 
According to the graph, how long must each electrician work in order for the two to charge equal amounts?


http://static.k12.com/calms_media/media/1514000_1514500/1514177/3/ca91333a7cd287feb8c9dc093332a57ec62d7821/MS_IMC-1400806-100591.jpg

anonymous · Answer

@dan815

anonymous · Answer

50 + 40h = 60 + 36h
solve for h

anonymous · Answer

ok i will try i am not that great at these

anonymous · Answer

thank you i will fan i got it 2.5 right?

anonymous · Answer

yes - and it matches the graph where the 2 points intersect.  Great job!  You can do it

anonymous · Answer

ok thank you i will say your name if i need you agian

anonymous · Answer

lol i am sorry but please make a equation for me to solve agian that what i not good at

Paul’s Pool Service charges $340 to open a pool and charges $28 each week for pool maintenance. Nelson’s Pool Service charges $280 to open a pool and charges $32 each week for pool maintenance. The system that models this situation is given, where c is the cost of pool maintenance and w is the number of weeks. 
 
c = 340 + 28w
c = 280 + 32w  
 
The solution to the system is (15, 760).
 
Which interpretation correctly describes the solution to the system of equations?
 
 A.
At 15 wk of pool cleanings, a customer will reach the maximum payment of $535.
 
 B.
At 15 wk, the cost for pool maintenance is the same for both companies. Both companies will charge $760.
 
 C.
Paul’s Pool Service charges more money in the fifteenth week by charging $760.
 
 D.
Nelson’s Pool Service charges more money in the fifteenth week by charging $760.

@khusker

anonymous · Answer

answer is B
340+28(15) = 760
340+32(15) = 760
so for 15 weeks of service both companies are the same cost

anonymous · Answer

ok next if you not to busy it my last one

Carissa and Louann both have savings accounts. Carissa has $250 in her account and deposits $80 per month. Louann has $1230 in her account and withdraws $60 per month.
 
After how many months will they have equal amounts of money in their accounts? What amount of money will each have when it is the same amount?
 
It will take   months. Then, they will both have $   in their accounts.

anonymous · Answer

@khusker

anonymous · Answer

than you so much i made 100%

anonymous · Answer

Sorry was in a meeting. Do you need help with the savings account one?