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Expressions and Equations: Expanding and Factoring Expressions
Expanding with Negative Coefficients
Description
Expanding with Negative Coefficients
Introduction
The distributive property applies not only to positive factors but also to negative ones. When a negative number multiplies terms inside parentheses, the sign of e...
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Transcript
Tia compares her phone plan with a discounted plan. The call charge varies with calls, while the service fee is fixed.
Let x represent the call charge. The fixed service fee is $5, so the original total cost is x + 5.
Under the new plan, Tia receives a 50% discount. 50% means 50/100, which equals 1/2, or 0.5.
A discount decreas...
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