13. Find the amount of work done if an object is pushed horizontally 70 m by a force of 25 N directed 60° above the horizontal. (Taken from page 754 #74.)

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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.