The sales tax for an item was $7.40 and it cost $370 before tax. find the sales tax rate. write your answer as a percentage.

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.

you can't solve x because it is 2 linear equation and you only have one equation