To drive from Seattle to Chehalis, you must first drive from Seattle to Tacoma, then from Tacoma to Olympia, and finally from Olympia to Chehalis. It is 4 miles farther from Seattle to Tacoma than from Tacoma to Olympia. It is 4 miles farther from Tacoma to Olympia than from Olympia to Chehalis. If it is 84 miles from Seattle to Chehalis, how far is it from Tacoma to Olympia? Explain your solution.

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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.