The formula of a slope:

We have the points A(-7, a) and B(c, d).
Substitute:

Exception: c ≠ -7.
Answer:
7 square miles
Step-by-step explanation:
I just counted the squares lol
You have the comma in the wrong place.
It's 4,000,000 NOT 4000,000.
Round[4,000,000, 10]
Answer: 4 million
Take her gross income and subtract her exemption of 8200. The number you get is what she needs to pay tax on. I can't really go any further, I need a table of information to go off of to further the answer. Although assuming you would have a tax bracket, you would simply just read to the right and a value in the single column will be your answer. Sorry, not much to go off here :/.