Posted by Jessica on Tuesday, April 19, 2011 at 4:48pm.
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 2lb weight stretches a spring to 15 in., and a 12lb weight stretches the same spring to 20 in. what is the length of the spring with no weight attached?

Math  Henry, Wednesday, April 20, 2011 at 3:31pm
a. C = 45 + 70*1 = $115 = Cost.
b. 45 + 70X = $150,
70X = 150  45 = 105,
X = 1.5h.
Jessica, check your 41811,2:45pm post

Math  ho le chong, Monday, June 2, 2014 at 5:41pm
sooka my dik

Math  Ping Pong Ding Dong, Thursday, June 12, 2014 at 11:02am
sook me hary bllz

Math  Anonymous, Wednesday, September 24, 2014 at 8:58am
slope of the line through A(2, 6) and B(8, 1)?
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