The speed of a runner, in miles per hour, on a straight trail is modeled by f(m)=110(−2m3+9m2−12m)+7, where m is the runner’s distance, in miles, from the start of the trail. What is the maximum speed of the runner for 0 ≤ m ≤ 3 ?.

What is one unexpected problem associated with cell phone use? a. it causes you to misjudge distances. b. it decreases the efficacy of your peripheral vision. c. it distracts your hearing from events on the roadway. d. it makes you more susceptible to other distractions.