A concert promoter needs to make $84,600 from the sale of 1940 tickets. The promoter charges $40 for some tickets and $50 for the others. Let x represent the number of $40 tickets and y represent the number of $50 tickets. (a) Write an equation that states that the sum of the tickets sold is 1940.     (b) Write a formula for how much money is received from the sale of $40 tickets? $     (c) Write a formula for how much money is received from the sale of $50 tickets?

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.