Answer: For 1 it is A - f(x)=(x-2)(x+4) and for 2 it is C - y = 0.5x^2 + 1.5x − 5
Step-by-step explanation:
Just use Desmos
The picture below has both of the answers to your problem.
1, 5, 4, 2, 3 in that order

The surface element is

and the integral is


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To compute the last integral, you can integrate by parts:



For this integral, consider a substitution of




and the result above follows.
1. 66.60
2. 48.00
3. 71.40
4. 2.95
5. 3.35
6. 2.50
7. 16.75
8. 6.66
9. 583.30
10. 13.00
11. 18.65
14. 26.98
Hope this could help