Water flows from the bottom of a storage tank at a rate of  r(t) = 300 − 6t  liters per minute, where 0 ≤ t ≤ 50. Find the amount of water that flows from the tank during the first 40 minutes.

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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.