12/7 as a mixed number

Write each expression in exponential form and find its value.| ! 2 x 2 x 2 x 2

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

What expression is equivalent to (2x-1)(x-3)?