Marginal Revenue is defined as the revenue generated with respect to increase in sale of another extra unit of product.
So we will calculate Marginal Revenue equation by finding the change in Revenue with respect to change in Quantity.
Given the Total Revenue Function as:-

Differentiating Total Revenue function (Tr) with respect to quantity (q):-
So Marginal Revenue equation will be, 
(3,0) and (0,9)
Slope= (9-0)/(0-3)= -3
Line equals Y= -3x+9
80X12 Will make 960 cents making her only abell to buy 12 tomatoes.(Note that you have to subtract 12.00 to 2.00 to make it were she can get to the farmers market....)
Answer:
The answer to your question is the shortest distance is 5.83 mi
Step-by-step explanation:
Process
1.- We observe that the rides to north and after to east, so she is describing a right triangle where the shortest distance to come back to the starting point is the hypotenuse of that triangle.
c² = a² + b²
c² = 5² + 3²
c² = 25 + 9
c² = 34
c = 5.83 mi
The monomial x would be the length of the sports banner.
-We know this because we typically use a basic variable for the thing that does not change. In this case, the length of the sports banner remains the same.
The second degree term in the expression would be the increase in area of the culture banner to make the sports banner.
-We can tell this because when we increase the width of the banner by 12, the resulting polynomial is 12x larger than x^2 (which was the original area of the culture banner.
The binomial expression x + 12 would be the width of the sports banner.
-Since we are increasing the width of the culture banner from x, x + 12 would represent the new width of the sports banner.
The first degree term in the expression would be the area of the culture banner.
-Because side of the culture banner is the same before the increase, multiplying x by itself will give you an area of x^2. This is the first degree term.