Use mental math and a pattern to find the product (2x4) x 10

80.

2 x 4 = 8

8 x 10 = 80

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.