Graph the function h(u)=−6u^3−24.21u^2+266.3388u+7.48 on your graphing calculator on the interval [-15,15]. Use your calculator's zero, maximum, and minimum features to answer the following questions:
Round all answers to 3 decimal places.:HINT

The h(u) -intercept is:
The u-intercept(s) are:
h has a local minimum of that occurs at
h has a local maximum of that occurs at
h is increasing on the interval(s):
h is decreasing on the interval(s)