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Practice problem

Step Functions

By Liza Sulkin

You're staying at a hotel when you suddenly feel an inexplicable urge to call the Expii office. The hotel charges a flat rate of $5\$5 for the first 77 minutes of a phone call and 2525 cents for each additional minute, rounding up.

You only have $12\$12 to spend on a phone call. What is the longest possible call you could make?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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