mateoalvarez1211 mateoalvarez1211 23-10-2022 Mathematics Answered Let f(x) = 4x6 - 72x5 + 9. Find the intervals where f is increasing. O (-∞, 0) O (15, ∞) O (-∞, 0) U (15, ∞) O (-∞, 15) O (0, 15)