I need help ASAP will mark you the the brainliest

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

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?