Find the transition points. y = 15x³ + 360x² (Use symbolic notation and fractions where needed. Give your answer in the form of a comma separated list) x = -8 Incorrect Find the interval(s) of increase. (Use symbolic notation and fractions where needed. Give your answer as interval(s) in the form (*, *). Use the symbol ∞ for infinity, U for combining intervals, and an appropriate type of parenthesis "(", ")", "[", "]" depending on whether the interval is open or closed. If the interval does not exist, enter Ø). x E (-∞0,-16) U (0,00) Find the interval(s) of decrease. (Use symbolic notation and fractions where needed. Give your answer as interval(s) in the form (*, *). Use the symbol ∞ for infinity, U for combining intervals, and an appropriate type of parenthesis "(", ")", "[", "]" depending on whether the interval is open or closed. If the interval does not exist, enter Ø). XE (-16,0) Find the interval(s) on which the function is concave up. (Use symbolic notation and fractions where needed. Give your answer as interval(s) in the form (*, *). Use the symbol ∞ for infinity, U for combining intervals, and an appropriate type of parenthesis "(", ")", "[", "]" depending on whether the interval is open or closed. If the interval does not exist, enter Ø). x E (-8,00) Find the interval(s) on which the function is concave down. (Use symbolic notation and fractions where needed. Give your answer as interval(s) in the form (*, *). Use the symbol ∞ for infinity, U for combining intervals, and an appropriate type of parenthesis "(", ")", "[", "]" depending on whether the interval is open or closed. If the interval does not exist, enter Ø). XE (-∞0,-8)