Write an equation for the following scenario: Small whiteboards cost $15 each with a $20 delivery fee for the entire order, regardless of size.

15 point ! ~ see if you know the answer to both you!

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

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?