Ayuda por favor es para hoy

Place the following steps in order to complete the square and solve the quadratic equation,

Jason went to an arcade to play video games. he paid $2 for every 11 tokens he bought. he spent a total of $16 on tokens. which equation can be used to determine, t, the number lf tokens jason bought

If f(x)=x+7 and g(x)=1/x what is (fog)(x)