Whats the question ? Are you trying to figure out how much he has left ?
Return on investment can be given by

Given that the profit is $12,000 and sales is $45,000. Thus, the cost of goods sold is given by $45,000 - $12,000 = $33,000.
Therefore, the return on investment is
Answer:
a (5a - 6b)
Step-by-step explanation:
Factor <em>a</em>
5a^2 - 6ab
<u>a (5a - 6b)</u>
<u />
Answer:
n=-3
Step-by-step explanation: