A movie theater is filled to capacity with 250 people. After the movie ends, people start leaving at the rate of 50 each minute. (a) Find an equation for N, the number of people in the theater, as a function of t, the number of minutes after the movie ends. Enter your answer as an equation, such as N = 5t – 1. help (equations) (b) For what values of t does the equation make sense in practical terms. help (inequalities) Domain:

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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.