Write an equation of the line passing through the point (3, -1) and parallel to the line = 2 3 − 5

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

How do i do this activity, is appreciated

Which expression gives you the distance between the points (5,1)and(9,-6)