Trig Difference quotient

Put the parts of the difference quotient in the right spots

What does 5(x + h) + 4 simplify to?

Which of these is correct for the numerator of the difference quotient?

f(x) = 5x + 4

Finish this expression by simplifying it

$$\frac{5x+5h+4-5x-4\ }{h}$$

Fill in difference quotient for f(x) = x²

Find f(x+h) for f(x) = x²

What is (x + h)(x + h)?

$$\frac{2xh+h^2}{h}=$$

Fill in difference quotient for f(x) = x² + 1

Simplify $$\frac{\left(x+h\right)^2+1\ -\left(x^2+1\right)}{h}$$