(3 1/4 + 2 5/6) + 1 3/4
pls add a step by step explanation

Need on this geometry question. explain how you did it.

Which graph represents the parent function of y=(x+2)(x-2)

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.