4. Alice is running a snack booth at the carnival. She sells lemonade for $1.25 per cup, and cookies for $0.75 each. At the end of the day, she finds she has earned a total of $136.25. Write and solve a system of two equations in two variables to determine how many of each item Alice sold. (and a total of 141 items were sold)

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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.