ANSWER ASAP
Ebbinghaus found that time to relearn a list was
A. Shorter than the initial time to learn the list
B. Longer than the initial time to learn the list
C. The same
D. Equal to zero

Awould be the correct answer

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.   

It was good because i had tacos : )