Please I need 1,2, and 4

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Jose bought 20 shares of netflix at the close price of $117.98. in a few years, jose sells all of his shares at $128.34. how much money did jose make? a.) $192.50 b.) $207.20 c.) $212.50 d.) $224.60

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