As the heart beats, blood pressure increases and decreases. This happens cyclically

As the heart beats, blood pressure increases and decreases. This happens cyclically at the rate of the person’s heart beat. A doctor is monitoring the blood pressure of a patient whose heart rate is 70 beats per minute. The maximum blood pressure over the course of a 10-minute period is 120 mm/Hg and the minimum is 60 mm/Hg. Find a sine function that models the person’s blood pressure as a function of time (in minutes).