. Monika is running around a park on a trail that is 7 miles long. The number of miles Monika has run, d, after t minutes is modeled by the

equation shown. d=\frac{1}{15} t+1 Mark is running around the same trail and starts at the same time as Monika. His speed is as fast as Monika's speed,3/4and he starts a mile behind her. a.Write the equation that models Mark's run at this speed if he runs one time around the park. b.Graph the equation that models Mark's run at this speed if he runs one time around the park. What is the domain for Mark's equation.