What is the measure of the indicated angle ?

72

unknown angle suppose x

108+x=180(co interior angle)

x=180-108

x=72

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.