Asked by Jessica

A plumber charges $45 for a service call, plus $70/h for her time.

a. Find the cost of a two hour service call.

b. How long was a services call that cost $150?


Also .......

as the weight held by a spring increases, the length of the spring increase proportionally. suppose a 2-lb weight stretches a spring to 15 in., and a 12-lb weight stretches the same spring to 20 in. what is the length of the spring with no weight attached?

Answers

Answered by Henry
a. C = 45 + 70*1 = $115 = Cost.

b. 45 + 70X = $150,
70X = 150 - 45 = 105,
X = 1.5h.



Jessica, check your 4-18-11,2:45pm post

Answered by ho le chong
sooka my dik
Answered by Ping Pong Ding Dong
sook me hary bllz
Answered by Anonymous
slope of the line through A(2, 6) and B(8, -1)?
Answered by lucy:)
a. cost=45+70*2=45+140=$185
b. $150-$45=$105 $105/$70=1.5 hrs
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