I don't know how to solve these, please help. No .jpg because i can't see them only pasted images or text

14. Find the area of the shaded region in the graph below. y = Vr (1. 1) x =4 o y = 1/x' 13. The length of a rectangle is increasing at a rate of 8 cm/s and its width is increasing at a rate of 3 cm/s. When the length is 20 cm and the width is 10 cm, how fast is the area of the rectangle increasing? 15. Farmer Ed has 1,500 meters of fencing and wants to enclose a rectangular plot of width x that borders a river. He does not use fencing on the river. See the figure. a. Express the area A of the rectangular fence as a function of x. 1,500 - b. Determine the largest area that the farmer can enclose. 16. EXTRA CREDIT!! Find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. Sketch the region and the solid. Show all work. x=y', x=0, y=2