Please help me this is very important its a test due in 30 minutes

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

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !