Given:
Fixed salary = $1400
Additional salary = $500 each time he sells a car.
To find:
The equation for the situation and how much money he will make if he sells 7 cars.
Solution:
Let y be the total salary of the salesman after selling x cars.
He will earn an extra $500 each time he sells a car. So, extra money earned by him after selling x cars is 500x.
Total salary = Fixed salary + Additional salary

Substituting
, we get



Therefore, the required equation for the given situation is
and the salesman will earn $4900 if he sells 7 cars.
I think the number is 81 but I am not sure hoped that helped sorry that I am not completely positive ):
Answer:
C
Step-by-step explanation:
Answer:

Step-by-step explanation:





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Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
<h3>What is a cone?</h3>
It is defined as a three-dimensional shape in which the base is a circular shape and the diameter of the circle decreases as we move from the circular base to the vertex.

Isabella equation:

The area of the base = 12π square cm

Thus, Isabella’s error is Isabella should have divided the product of 12π and 9 by 3 to get V = 12π(9)/3 option fourth is correct.
Learn more about the cone here:
brainly.com/question/16394302
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