Which number line represents all of the values of x for the equation x2 = 100

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.

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers