Question

an electrician charges $35 per hour plus a fixed amount for residential . for a job that took 6 hours, he billed $270. write an equation in the form y=mx+b that represent the cost ,c, of hiring this electrician for a job that takes x hours

Answer 1

so how much is the fixed cost if we know that he charges $35/hour:

$270-(6x$35)

Answer 2

=60

Answer 3

i think it would be somewhat like 35*6=?, then that number divided by 270

Answer 4

good. So, , the fixed is 60 like you said, which one is the cost, c in the expression
270 =(6x$35)+$60?

Answer 5

thts just the way i do math

Answer 6

ok ill try his then i do your taylor

Answer 7

so in the expression above , 270 is the fixed cost, so for x hours of labour and $60 fixed cost, we shall always have

cost = (cost per hour) x(number of hours) +Fixed cost

Answer 8

still dont understand

Answer 9

ok 22

Answer 10

what did they say is the cost in the question c right?

Answer 11

yes

Answer 12

and rate per hour is 35 right?, this is our m, remember m is the gradient in the equation y =mx+b, so our m is 35 in this case

Answer 13

c=35x +60

Answer 14

ok

Answer 15

i hope you understand what has just happened

Answer 16

need more help but ill get it in time