Who is correct though and why?

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

Select all the expressions that will include a remainder.

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?