Question

I don’t know if I’m doing part a correctly, I just need help with part a.

Answer 1

We will have the following:

a)

*1970:

`f(70)=82.6(70)+12363\Rightarrow f(70)=18145`

*1990:

`f(90)=-376.4(90)+48684\Rightarrow f(90)=14808`

*2030:

`f(130)=-376.4(130)+48684\Rightarrow f(130)=-248`

b) We will have that the graph will be the following:

[From the scale given in the image it looks like option B], since the scale is so large.