Question

f(X)={(3,5), (2,4), (1,7)}
g(X)=sqrt{x-3}
h(x)= {(3,2), (4,30, (1,6)}
k(x)= x^2+5

how do i solve
1. (k-g)=5
( I have this so far: K(5)-g(5)
((5)^2+5)-√(5-3)
30-√2
but I dont know if I'm doing this right

2.(1/f(x))=

3. (kg)(x)=

Answer 1

1 is right

Answer 2

your computation is completely correct