Answer:
I think it's D
Step-by-step explanation:
Answer:

Step-by-step explanation:
The correct question should be:
We have been told that all we have to do to get profit is to subtract the cost from revenue.
Revenue = 
Cost <em>= </em>
<em />
<em />
Hence:
Profit = 

Putting it in ordered form:

This is an expression for the profit.
Answer: 81
Step-by-step explanation: 9 times 9 = 81
Answer:
20??? wow I feel stupid I forgot how to do everything