Find the total area of the region between the curve and the x-axis. 20) y=-; 1sx $ 3 21) y=x2(x - 2)2; 0sx $2 Provide an appropriate response 22) Find f(n) if [ fit) at = x sin 8x. Evaluate the integral. 23) x dx (7x2 + 3)5 J xinx6 dx 25) 9x 2 -7 ex dx 26) 1-2xSolve the problem. 27) Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t. v = -14t + 6, s(0) = 10 Solve the initial value problem. 28) as = 16t(4+2 - 1) , s(1) = -1 Use the substitution formula to evaluate the integral. 29 ) 2t dt 1(2+ 12)3 dx 30) V81 - x2 31) [ 3 cos x sin x dx