Fan/medal? (Check one answer and help me with two problems?)

1. The rollercoaster will run from right to left, so work in that order when selecting points. 1st point: -12
2nd point: -4
3rd point: 5
Check answer to:
2. Using those points as zeros, construct the polynomial function, f(x), that will be the path of your rollercoaster. Show all of your work.
f(x)=(x+12)(x+4)(x-5)
f(x)=x^2+4x+12x+48(x-5)
f(x)=x^3+4x^2+12x^2+48x-240
f(x)=x^3+16x^2+48x-240

Question

Fan/medal? (Check one answer and help me with two problems?)

1. The rollercoaster will run from right to left, so work in that order when selecting points. 1st point: -12
2nd point: -4
3rd point: 5
Check answer to:
2.  Using those points as zeros, construct the polynomial function, f(x), that will be the path of your rollercoaster. Show all of your work.
f(x)=(x+12)(x+4)(x-5)
f(x)=x^2+4x+12x+48(x-5)
f(x)=x^3+4x^2+12x^2+48x-240
f(x)=x^3+16x^2+48x-240

anonymous · Answer

Help With: 
3. Using two of the theorems dicussed in the lesson, prove to the construction foreman that your function matches your graph. Use complete sentences.

4. Solve for the y–intercept for your function, f(x), and then construct a rough graph of your rollercoaster. If your y–intercept is off the graph, give the coordinates of the y–intercept.

anonymous · Answer

i need help with this assignment too!