Foot traffic at the Susquehanna River is decreasing at a rate of � = −3� + 90 people per hour until it levels off at 18 people per hour. Write the piecewise equation for this situation and find
how many people are at Harper’s Ferry after:
12. 10 hours
13. 28 hours

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Which function has the same domain as y=2x

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.