Otto used 6 cups of whole wheat flour and x cups of white flour in the recipe. what is the equation that can be used to find the value of y, the total amount of flour that otto used in the recipe, and what are the constraints on the values of x and y?

6 cups of whole flour is a constant and x cups of white flour is a variable, so the total cups of flour for the recipe is:

y=x+6  The only constraints on the domain and range are that:

y≥6 and x≥0  as a negative value for x has no real world application to the problem.

The correct answer is $90