The cost to pay a plumber is a linear function where h represents the hours a plumber worked. The function f(h) = $100h + 65 models the total cost to pay a plumber for hours worked (h).
How much will it cost to pay a plumber if it takes 2 hours to complete the job?
a
$265
b
none of these

c
$200
$165

answer: the answer is 23

step-by-step explanation:

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.