What transformation transforms (a, b) to ( a, -b)? a) a translation of 1 unit downb)a translation of 1 unit upc)a reflection over the y-axisd)a reflection over the x-axis

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

Two lines parallel to the same plane are parallel to eachother

Solve the system of equations y= 3/2 - 1, -x+ y =-3