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Common Core Standard HSF-LE.A.1c Questions

Recognize situations in which a quantity grows or decays by a constant percent rate per unit interval relative to another.

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Grade 9 Exponents CCSS: HSF-LE.A.1c
The graph of exponential growth is described best by the following:
  1. The graph is a horizontal line.
  2. The graph is a vertical line.
  3. The graph drops from the left to the right.
  4. The graph raises from the left to the right.
Grade 11 Quadratic Equations CCSS: HSF-LE.A.1c
Which function represents exponential decay?
  1. [math]f(x) = 2^x[/math]
  2. [math]f(x) = 8(0.9)^x[/math]
  3. [math]f(x) = 6x^2[/math]
  4. [math]f(x) = 0.9 * x[/math]
Grade 9 Linear Equations CCSS: HSF-LE.A.1c
Your friend bought a car for $24,000. The car depreciates at the rate of 10% per year. What is your car worth in 3 years? Write and solve an exponential decay model to represent the car's value.
  1. $29,040; [math]y = 24,000(1.1)^2[/math]
  2. $19,440; [math]y = 24,000(0.9)^2[/math]
  3. $17,496; [math]y = 24,000(0.9)^3[/math]
  4. $31,944;[math] y = 24,000(1.1)^3[/math]
Grade 9 Exponents CCSS: HSF-LE.A.1c
A graph of exponential decay is best described as follows:
  1. It is a horizontal line.
  2. It is a vertical line.
  3. It drops from the left to the right.
  4. It raises from the left to the right.

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