Answer:
a) y = .70x + 20
-To find this, use the rate as x since it will change based on the number of miles. Since 20 is a flat fee, it can be added at the end as a constant.
b) This graph forms a straight line.
-This is because the answer in a is a linear equation.
c) The slope is .70 and the y-intercept is 20.
-For this one, the y-intercept is always the constant at the end of the equation and the slope is the coefficient of x.
C.....hlj so yeah because it shows it on the diagram
Multiply 20 and 12 then divide hope this helps :)
Step-by-step explanation:

I hope I'm correct. I've never learnt differentiation for log and exponents before