Mr. Martinez hires a plumber to fix his kitchen sink. The plumber charges a one-time fee of $45
and an additional $15 for parts. He also charges
$40 for each hour he works.
A. The cost of hiring the plumber can be
represented by a linear function. Identify the rate
of change and initial value of this function.
Explain what these values represent in terms of
the situation.

Step-by-step explanation:

The $45 fee is a one-time thing and is the initial value of this function.  The rate of change of the function is $40/hr.  

It's not clear when the $15 for parts is paid.  One interpretation would be that this is a second up-front charge, in which case the initial value would be

$45 + $15, or $60.

f(x) = y

f(-3) = -5

step-by-step explanation:

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all