Please help! I’ll give 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

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Can any one me with the answers to these questions asap?