1. [0/1 Points] DETAILS PREVIOUS ANSWERS Math 110 Course Resources - Curve Sketching Course Packet on intervals of concavity Suppose the second derivative of f is given by f(x) = 8(x + 9). Determine the intervals of concavity of f. (36 - x2)5 Enter your answer using interval notation. If an answer does not exist, enter DNE. + f is concave up on X X f is concave down on X VD Submit Answer 2. [-/1 Points] DETAILS MY Math 110 Course Resources - Curve Sketching Course Packet on intervals of concavity Suppose the second derivative of f is given by f(x) = 30x6(x + 7)3(x2 + 64). Determine the intervals of concavity of f. Enter your answer using interval notation. If an answer does not exist, enter DNE. f is concave up on f is concave down on