Find the sum and choose the correct answer. 2n 3 + 4n 2 - 7 and -n 3 - 8n - 2
i need help its a pre-test on odysse. yware i have to make up my credits from last year ill give brain. liest

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

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.

Marcy is conducting a study regarding the amount of time students at her school spend talking to friends online. which group would give marcy the best results for her study?