Bo and erica are yoga instructors. between the two of them, they teach 33 yoga classes each week. if erica teaches 15 fewer than twice as many as bo, how many classes does each instructor teach per week?

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.