Identify the end behavior and the zeros of function h h(x) = -x^3-9x^2+4x+96

based on these key features which statement is true about the graph representing function h

a. the graph is positive on the intervals (-8, -4) and (3, infinity)
B. the graph is negative on the intervals (- infinity, -8) and (-4,3)
C. the graph is negative on the intervals (-3, 4) and (8, infinity)
D. the graph is positive and intervals (- infinity, -8) and (-4, 3)

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

How do you use the elimination method for this question? explain, because i really want to understand!

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?