13. [-/1 Points] DETAILS LARCALC11 2.3.074. Determine the point at which the graph of the function has a horizontal tangent line. F(x) = . x 2 + 1 (x, y) = Need Help? Read It 14. [-/1 Points] DETAILS LARCALC11 2.3.093. Find the second derivative of the function. F(x) = 5x3/2 F " ( x ) = Need Help? Read It 15. [-/1 Points] DETAILS LARCALC11 2.3.105. Use the given information to find f '(5). F(x) = 5g(x) + h(x) g (5) = 7 and g'(5) = -4 h(5) = 6 and h'(5) = -5 F ' (5 ) =[ Need Help? Read It