question archive You get a new job as head of security at Target Field

Subject:MathPrice: Bought3

You get a new job as head of security at Target Field. Way to go! One of your responsibilities is to ensure that, in the case of an emergency, everyone can get out of the stadium quickly. From your Math 1200 days, you know that the time that it takes to get everyone out varies directly with the number of people (more people means more time) and inversely with the number of doors (more doors means less time).

You run an experiment and find that 25,000 people can exit in 15 minutes using all 50 doors. How long will it take a packed stadium (40,000 people) to exit if only 35 of the doors are opened? Round to the nearest minute.

2) Use your graphing calculator to graph the function f(x) x^{3 }+0.282x^{2} - 1.676x- 0.1752 on the x-interval [-2, 3]. Round answers to hundredths. You do not need to show any work for this question.

a. What is the degree of the polynomial?

b. Find the x-intercept(s)

c. Find the y-intercept(s)

d. Find the coordinates of any minimums or maximums.

3) I have 7 blouses, 38 skirts, and 345 pairs of shoes. How many unique outfits can I wear?