<span> y - x3 - 9x2 - 27x - 37 = 0 is this what you were looking for?</span>
This is how the sketch should look on your graph!
Answer:

Step-by-step explanation:
To get the answer just subtract f(x) by g(x)
The work is shown below:

The answer to this problem is 4
First calculate the future value of the annuity
The formula to find the future value of an annuity ordinary is
Fv=pmt [((1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT quarterly payment 1500
R interest rate 0.12
K compounded quarterly 4
N time 4 years
Fv=1,500×(((1+0.12÷4)^(4×4)
−1)÷(0.12÷4))
=30,235.32
Now compare the amount of the annuity with amount of the gift
30,235.32−30,000=235.32
So as you can see the amount of the annuity is better than the amount of the gift by 235.32
Second offer is better
Hope it helps!