Answer:

Step-by-step explanation:
![(e^x)'=e^x\\\\\bigg[f\bigg(g(x)\bigg)\bigg]'=f'\bigg(g(x)\bigg)\cdot g'(x)\\\\\left(\dfrac{1}{x}\right)'=-\dfrac{1}{x^2}\\\\====================](https://tex.z-dn.net/?f=%28e%5Ex%29%27%3De%5Ex%5C%5C%5C%5C%5Cbigg%5Bf%5Cbigg%28g%28x%29%5Cbigg%29%5Cbigg%5D%27%3Df%27%5Cbigg%28g%28x%29%5Cbigg%29%5Ccdot%20g%27%28x%29%5C%5C%5C%5C%5Cleft%28%5Cdfrac%7B1%7D%7Bx%7D%5Cright%29%27%3D-%5Cdfrac%7B1%7D%7Bx%5E2%7D%5C%5C%5C%5C%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D)

No, only 3, 6, and 9 are divisible by 3 because 3 x 1= 3, 3 x 2= 6, 3 x 3= 9. Hope this helps
Answer:
Adults = 448
Students = 888
Step-by-step explanation:
Write equations with info given
A = Adult tickets
S = Student tickets
5A+1S=3,128
A+S=1336
Subtract equations from each other
4A=1792
Solve for A
A=448
Plug A into second equitation
448+S=1336
Solve for S
S=888
The area of that octagon is 77.3