Answer:
Rate of change of y is 
Step-by-step explanation:

• Given the table of values, you can identify these points:

If you plot them on a Coordinate Plane, you get:
As you can observe, it is a Linear Function.
• The equation of a line in Slope-Intercept Form is:

Where "m" is the slope of the line and "b" is the y-intercept.
In this case, you can identify in the graph that:

Therefore, you can substitute that value and the coordinates of one of the points on the line, into this equation:

And then solve for "m", in order to find the slope of the line.
Using this point:

You get:

Therefore, the equation for the data in Slope-Intercept Form is:

Hence, the answer is:
• It represents a Linear Function.
,
• Equation:
B.) r(x) - e(x) = p(x)
Profit is how much money remains after the expenses are deducted from the total revenue
Answer:
$21
Step-by-step explanation:
$20 for the 500 minutes
We still have to pay for 10 minutes.
10 cents per minute.
10centsx10 minutes.
100 cents, also known as 1 dollar.
$20 plus $1 means the answer is $21.
Hope this helps!
-AxekickNebulite