volume of cylinders, cones and spheres. gonna need a little help. I have to find the volume and round to the nearest hundredth​

What is the answer to |-2x-5|-|-4+8| and x=7

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?