Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable d dd models Rachel's distance from her exit (in meters) t tt seconds after the cameras began recording the stunt. D=38t+220 What is Rachel's speed?

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days