use the quotient rule then after using it the first time use it again on your resulting equation, since you are looking for the second derivative
I think that u would have to take 14 from 13 and divide that by 2 (I THINK) i am not fully sure though
Megan has 40 dollars sense charlene has 8 more dollars and the both have 86
Well I can’t see where x would be therefore I can’t tell you how to get to x