f(1) = -2(1)^2+3(1)+10 i know that the anwser is f(1) = 11 i just need to see the steps pls need help

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.

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

How can you construct perpendicular lines and prove theorems about perpendicular lines