Answer: D: $5272.
Step-by-step explanation:
Considering that all of the information is given to you already, the only thing that you need to do is plugin 9 for n.
So the final equation will look like this: 
The answer comes out to $5272.46721451 but rounding that to the nearest dollar would be answer choice D: $5272.
It is the last answer. because the shaded part is above the line, it is greater than. the slope is 1/3. that leaves only one more equation remaining, so the answer is the last one.<span />
Answer:
1
Step-by-step explanation: