Question

Answer this, please. I'm having trouble or I'm just dumb.

Answer 1

-4 and 1/7 is your answer.

Explanation:

• substitute 19 for x in the equation.

`f(x)=(3)/(19+2) -√(19-3)`

• do the processes.
• 
  `f(x)=(3)/(21) -√(16)\\f(x)=-(1)/(7) -4\\f(x)= -4(1)/(7)`

Answer 2

f(x)=(5+a)/(a-1)

Explanation:

input a+2 for x

f(x)=(a+5)/(a-1)

and no ur not dumb u just need practice :D