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Common Core Standard HSF-IF.C.8b Questions

Use the properties of exponents to interpret expressions for exponential functions. For example, identify percent rate of change in functions such as y = (1.02)t, y = (0.97)t, y = (1.01)12t, y = (1.2)t/10, and classify them as representing exponential growth or decay.

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Grade 12 Functions and Relations CCSS: HSF-BF.A.1, HSF-BF.A.1a, HSF-BF.B.5, HSF-LE.A.2
A bacteria colony covers [math]5 \ "cm"^2[/math] and grows exponentially. After 4 days it covers [math]80 \ "cm"^2[/math]. How much area will it cover after 2 weeks?
  1. [math]8.2 \ "m"^2[/math]
  2. [math]4300 \ "cm"^2[/math]
  3. [math]4.3 \ "m"^2[/math]
  4. [math]1393 \ "cm"^2[/math]
Grade 12 Functions and Relations
A town begins with 100 people and after 100 years has a population of 3200. The population has
  1. doubled every 25 years.
  2. quadruped every 30 years.
  3. tripled every 10 years.
  4. doubled every 20 years.

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