Answer: y
=
x
2
+
93
x
−
288
Your Welcome
The answer is: 10
Hope this helps! (:
I think you mean,

You can use the usual formula,

That in this case is,

Where I have used,
Answer:
$600
Step-by-step explanation:
subtract 45 from 75, you get 30. multiply 30 by 20, and there is your answer.