You can represent this situation as an inequality, by first defining your variables. Let x be the number of hours of homework per week assigned for the math courses and y be the number of hours of homework assigned per week for the science courses. We know that you take one math course and two science courses. This can be represented by the expression: 1x + 2y We know that there can't be more than 12 hours of homework per week. Thus, there should be less than 12 hours of homework. This can be shown as the other side of the inequality: < 12 Therefore, your full inequality is: x + 2y < 12 With the variables described above. Hope this helps! :)