Hi I’m on my big sis’s phone what is 8.43 + 4.3 + 6.6 and I also need a explanation lol

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

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

For the functions f(x) = -922 – 2x and g(x) = -32? + 6x – 9, find (f - g)(x) and (f - ).