<h3>
Answer: 4</h3>
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Work Shown:

Note in step 2, I factored each number in the square root to pull out the largest perfect square factor. From there, I used the rule that
to break up the roots.
12*2+7(x) you need to solve for x
For 18% it will take 2 years to pay
For 3 years payment will be $36.50
For 14% it will take 1.9 years or 23 months
Use the ticket price in the first column in the formula 400-7p to get the answer for the second column (number of tickets sold)
Then multiple the number to f tickets in the second column by the price in the first to determine the revenue.