j. A boat that arrives at a dock 20 ft above water level is being pulled in by a fisherman using a rope at the rate of 1.5 ft/sec. How fast is the boat approaching the dock when the total length of rope out is 50 ft?

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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.