a, b, c and d pls!

(a) Find the total area of the shaded region below, between f(x)=81(x32x2) and the x-axis, (b) Find the consumen' surplus given that the demand function is D(q)=62q2 and the equilibrium quantity is 5. (c) The rate of absorption of a medication is A(t)=t1+t13. where t is the number of hours since the medication was adininistered. Find the total ahsorption from t=2 to t=7. (d) Find the total area bounded by the given curves: y=x24x,y=2x+7 (a) Find the total area of the shaded region below, between f(x)=81(x32x2) and the x-axis, (b) Find the consumen' surplus given that the demand function is D(q)=62q2 and the equilibrium quantity is 5. (c) The rate of absorption of a medication is A(t)=t1+t13. where t is the number of hours since the medication was adininistered. Find the total ahsorption from t=2 to t=7. (d) Find the total area bounded by the given curves: y=x24x,y=2x+7