The rate of change of the level of ozone, an invisible gas that is an irritant and impairs breathing, present in the atmosphere on a certain May day in a certain city is given by R(t) = 3.2922t^2 - 0.374t^3 (0 < t < 11)
(measured in pollutant standard index per hour). Here, t is measured in hours, with t = 0 corresponding to 7 A. M. Find the ozone level A(t) at any time t, assuming that at 7 A. M. it is zero.

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Evaluate 5 + 6 · 2 – 8 ÷ 4 + 7 using the correct order of operations. a. 22 b. 11 c. 27 d. 5