Arock is thrown from the top of a tall building. the distance in feet between the rock and the ground t seconds after thrown is given by d = -16t2 -4t + 412. how long after the rock is thrown is it 407 feet from the ground?

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.