How do I solve numbers 5, 7, 11, and 13?

10 Fig. 14 In problems 3 -14, find all of the critical points and local maximums and minimums of each function. I 3. f(x ) = x x2 + 8x +7 4. f(x) = 2x2- 12x+7 5. f(x) = sin(x) 6. f(x) =x3 - 6x2+5 7. f(x) = (x- 1)2 (x -3) 8. f(x) = In( x2- 6x + 11 ) 9. f(x) = 2x5 - 96x + 42 10. f(x) = 5x - 2 11. f(x) = 5x + cos(2x+1) 12. f ( x ) = V x 13. f(x) = e ( x - 2)2 14. f(x) =1x +51