If a number is divisible by two then the number is even

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?

Plzzz answer both questions and i will give you 100 points