Malik bought chargers that are shaped like regular octagons. If the chargers have the dimensions shown below, what is the area of one charger?
A. 164 square inches
B. 128 square inches
C. 272 square inches
D. 68 square inches
I'm wasting a lot of points for this question so PLEASE do not answer nonsense in order to take my points. With that said, please help

Cameron indoor stadium at duke university is one of the most revered sites in all of college basketball, as well as in all of sports period. duke’s men’s and women’s basketball programs have attained quite a few wins in the building over the last seventy years. cameron indoor stadium is capable of seating 9,460 people. for each game, the amount of money that the duke blue devils’ athletic program brings in as revenue is a function of the number of people in attendance. if each ticket costs $45.50, find the domain and range of this function.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is