a function has an input of the time in hours a swimming pool has been filling and an output of the water level of the pool in inches. which option best describes the function?

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

Answer question above and explain each step : )

Polynomial that can be factored as (3x-4)(3x+4)