Answer:

Step-by-step explanation:
1) Rewrite
in the form
, where a = y and b = 1.

2) Use Square of Difference:
.

3) Factor
.
1 - Ask: Which two numbers add up to 6 and multiply to -7?
-1 and 7
2 - Rewrite the expression using the above.

Outcome/Result: 
4) Rewrite the expression with a common denominator.

5) Expand.

6) Collect like terms.

7) Simplify
to 

The formula for profit<span> is total revenue minus total expenses, resulting in net </span><span>profit.</span>
Answer:
65 < or equal to x > or equal to 100
Ps: had to put "or equal to", because I can't put the lines underneath
Anyways, when an inequality says and, it is automatically a compound inequality. The x is in the middle.
It may be the last one......................................... but i'm not sure.