Assume f(x)=-2x+8 and g(x)=3x what is the value of (g o f)(3)

Which fraction is not equivalent to 8/12 a. 2/3 b. 24/36 c. 4/10 d. 6/10

Can someone pls ! pls answer all. no explanation needed..

Apool measures 12.3 feet by 16.6 feet. if the longer wall of the pool has a diagonal of 17.8 feet, what is the volume of the pool? (round to nearest tenth)