Which of the following is an incorrect definition in the algebra of functions? Choose the correct answer below.
O A. (f-g)(x) = g(x) = f(x)
O B. (fog)(x) = f(g(x))
O c. (f. g)(x) = f(x) g(x)
OD. (f+g)(x) = f(x) + g(x)

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

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial