A. 10% is the answer
Step-by-step explanation:
The profit function is the difference between the cost and revenue functions
The profit function is 
<h3>How to calculate the profit function</h3>
The functions are given as:
- Cost function: C(x) =0.6x + 15000
- Revenue function: R(x) =1.25x
The profit function is then calculated as:

So, we have:

Evaluate the differences

Hence, the profit function is 
Read more about profit functions at:
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Answer:
$36.75
Step-by-step explanation:
If you take the original cost 35.00 and add 5% to it, you would get 36.75. If you think about it, it has to be above $35 since the sales tax would be more.
(2) is 1
because of pemdas