Jake bought 9 drinks for everyone in his family. He bought larges and smalls. The larges cost $1.50 and the smalls cost $.90. He spent $10.50 in all. How many larges and how many smalls did he buy? Define the variables for this problem. (Remember, the variables should represent what you are trying to figure out.) A. L= the size of a large drink; s = the size of a small drink B. L= the cost of a large drink; s = the cost of a small drink C. L= the number of large drinks purchased; s = the number of small drinks purchased

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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.