Will fan and Medal!!

I just need help on problem 49. I've done all the rest! Click for link to problems

Question

Will fan and Medal!!

I just need help on problem 49. I've done all the rest! Click for link to problems

amenah8 · Answer

Someone was helping me before and this was their explanation:

9. Seems like part A is asking you to pick points off the graph and use them to find 2 estimates of the area under the curve from 0 to 4. (left, right, midpoint, trapezoid, etc)

B. 
∫$$\int\limits_{0}^{4}a(c) dc$$

amenah8 · Answer

attachment

sooobored · Answer

what exactly is your question?

amenah8 · Answer

i just don't know how to answer the question

amenah8 · Answer

it's in the attachment, problem 49

sooobored · Answer

ai) is telling you to make an x-y table based off the graph

sooobored · Answer

|dw:1480546411236:dw|

sooobored · Answer

the area under the curve is the total amount of acres defaced from present day

amenah8 · Answer

how are you getting the y values?

sooobored · Answer

|dw:1480546511036:dw|
its asking you to approximate the total amount of acres defaced

sooobored · Answer

y values are from the y-axis 

|dw:1480546566548:dw|