How do you know that the sum of (-2 3/4) and 5/9 rational?

Elijah and his sister went to the movies. they had $34 altogether and spent $9.50 per ticket. elijah and his sister bought the same snacks. write and solve an inequality fotlr the amount that each person spent on snacks. interpret the solition

Of four points are collinear, they are also coplanar

What’s the domain of this function? fast