ShmoopTube

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We can tell you want a shmoopy question so bad it hurts...

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It's been so long since Donna made an actual phone call, that she's forgotten how to

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speak... so she now has to communicate entirely by text message.

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Not that she's complaining.

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Her cell phone company's texting plan charges a flat fee of $5 for 100 texts per month.

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Each text over 100 is charged $0.20.

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If Donna, who has this plan, wrote 125 texts

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last month, how much did she need to pay for texting last month?

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And here are the potential answers...

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So... what is this question asking?

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Well, it's really just a simple formula of a constant plus a scalable rate.

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So in this case the cost for a month of 100 texts is 5 bucks...

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and its x times point 2 for each additional text over 100.

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x is 25 in this problem...

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25 times point 2 is 5...

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so her total bill is 10 bucks.

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Our answer is B. As in, "Bill envy."

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