Need help with number 2 giving 20 points for this

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 is the solution set of the quadratic inequality x^2-5< or equal to 0

Measure of angles 31 (x+4) (3x+9) me