Chapter7: Systems Of Equations And Inequalities
Section7.3: Systems Of Nonlinear Equations And Inequalities: Two Variables
Problem 4SE: If you graph a revenue and cost function, explain how to determine in what regions there is profit.
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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.
Question
Write a linear cost function for situation. Identify all variables used. A parking garage charges $9 plus 55 cents per half-hour.
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