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Which of the following examples have a constant rate of change?

A salesperson earns $50 plus $10 for every $100 of merchandise he sells.
The amount bacteria double every hour.
You drive from Colorado to Texas. In the first 4 hours, you cover 240 miles, and in the second 5 hours, you cover another 240 miles.
The money you put in the bank earns 5% interest. This means that the bank pays you 5% of the amount of the money kept in the bank each year.

User Stucharo
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1 Answer

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The salesperson's earnings have a constant rate of change.
User Kartoch
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