Consider the function. g(x) = 7 - 5x3 + 4x5 Find g'(x). g' ( x ) = Find g"(x). g"(x) = Find g"(3) and g 9"(3 ) = 9' Determine whether the function g(x) is concave up or concave down at the indicated points. (a) x = 3 O concave up O concave down (b ) X = N K O concave up O concave down