I know I haven't been on this app for a long time but can ya'll help me plzz

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Find the measure of anglec in the following triangle