Answer:
C = 20 + 25h ..... Required identity
(C - 20) = 25(h - 0) ..... Point-slope form
C = 25h + 20 ..... Slope-intercept form.
25h - C = - 20 .... Standard form.
Step-by-step explanation:
A landscaper charges customers a one time fee and an hourly rate of $25.
If for 3 hours of work, it charges $95.
Then, C = C' + 25h ......... (1)
Where C is the total charge, C' is the fixed charge and h is the number of hours he works.
Therefore, putting C = $95 and h = 3, we get from equation (1),
95 = C' + 75
⇒ C' = 20
Therefore, the equation (1) becomes C = 20 + 25h
Hence, this is the identity in the scenario. (Answer)
Now, the point-slope form of the equation is (C - 20) = 25(h - 0)
where slope is 25 and the point is (0,20).
Now, C = 25h + 20
is the slope-intercept form having slope 25 and y-intercept 20.
Now, the standard form of the equation is 25h - C = - 20 (Answer)
