Hello tutors, can I get help with the following integration problems? Thank you.

During a workout session, your metabolic rate (the rate at which your body is burning energy, over time) starts out low and increases initially, but then decreases later as you get more tired and your workout slows down. This could be modeled by the function M(t) =40+150te?thkcal? where t is the time since the start of the workout (in hours). Here is a plot of M(t):