Answer: 81
Step-by-step explanation:
6.75 + 3 + 3.75 = X
X x 6 = 81
Most income statements have the net income on them but if they don't you subtract all the expenses like taxes, medical insurances, etc. from the gross income and you will have the net income.
A has no real solution. See the picture below for details.
The vertex will end up landing on (5,10)