When Fritz drives to work his trip takes 40 minutes, but when he takes the train it takes 30 minutes. Find the distance Fritz travels to work if the train travels an average of 15 milews per hour faster than his driving. Assume that the train travels the same distance as the car.

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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.