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.
Marshall is comparing different companies that rent sound systems. The total cost, y, for each company includes a fixed rental fee plus an additional fee based on the number of hours, x, the sound system is rented. Information about the cost for each company is shown below.
Part A
Which company has the lowest additional fee per hour for renting a sound system? Show or explain how you found your answer.
Part B
Marshall claims that the company that has the lowest fixed rental fee is always the company that will represent the lowest total cost for renting a sound system. Is Marshall's claim correct? Justify your answer with an example from the situation.
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