Question

PLEASE HELP!! The first answer WITH STEPS gets BRAINLY!

Mr. Lehman is a piano tuner. He charges his clients a fixed amount for a house call plus his labor which is based on an hourly rate. The graph below shows how much Mr. Lehman charges as a function of the time required to tune a piano

Which of the following best represents Mr. Lehmans hourly rate for labor?

A. 10$
B. 15$
C. 20$
D. 25$

Answer 1

=Mr.Lehmans hourly rate for labor is 20$

=30+40=70-50=20

Answer 2

Answer:

The Answer is 15$

You'd need to get the slope

it tells us how he charges with respect to Time

So picking any Point on the graph. Let's say (0,10) and (2,40)

m(slope) = y2-y1/x2-x1

= 40-10/2-0

=30/2

= 15$

Picking other points would still give this value