q 1 to 4 please type it out the answer or if has an option type it out the correct option.

Question 1 (2 points) Find the average value of the function u(x) - 10xsin(x*) on the interval [0, ~/]. Question 2 (2 points) Find the volume of the solid obtained by rotating the region in the first quadrant bounded by y=x* and =% about the y-axis. Select the correct answer. Main Content O3~ Question 3 (2 points) Use the Midpoint Rule with - 4 to approximate the area of the region bounded by the given curves. y=sin(mx/4), y=cos'(mxi4), 02x=1 Question 4 (2 points) If 432 J of work are needed to stretch a spring from 8 cm to 14 cm and another 580 J are needed to stretch it from 14 cm to 19 cm, what is the natural length of the spring? A