First you need to set up an equation y = mx + b. m would be the monthly charge and b would be the one time fee. x represents the number of months.
To solve for the number of months with a total price of 240 we substitute 240 in for y and solve for x.
240 = 25x + 40
subtract 40 from each side
200= 25x
divide by 25
8 = x
8 months
10 + 7r = 45
7r = 35
r = 5
5 miles
Answer:
1 and 4, 2 and 3, 5 and 8, 6 and 7
Step-by-step explanation:
From the diagram you can see that for all

This means that function is constant on the interval 
Answer: correct choice is C.
You can look up cymath.com it will work the problem out for you and show you the steps.
It might either be a right triangle or a cute triangle