Matties house consists of two stories and an attic. The first floor is eight and 56 feet tall, the second floor is 8 1/2 feet tall, and the entire house is 21 1/3 feet tall. How tall is the attic?

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.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Pls brainliest will be awarded if answer is correct