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6.7: Quiz II

Difficulty Level: At Grade Created by: CK-12

Multiple Choice – Please circle the letter of the correct answer and write that letter in the space provided to the left of each question.

  1. ________ What is the standard form of \begin{align*}6.57 \times 10^{-4}\end{align*}?
    1. \begin{align*}\frac{1}{657}\end{align*}
    2. 0.000657
    3. 65 700
    4. -0.000657
  2. ________ What is the solution for the exponential equation \begin{align*}4^{3x+5}=2^{4x-3}\end{align*}?
    1. 8
    2. -10
    3. \begin{align*}-\frac{2}{7}\end{align*}
    4. \begin{align*}-\frac{13}{2}\end{align*}
  3. ________ If \begin{align*}f(x)=2(3^{-x+3})\end{align*}, what is the value of ‘\begin{align*}x\end{align*}’ if \begin{align*}f(x)=\frac{2}{9}\end{align*}?
    1. \begin{align*}x=5\end{align*}
    2. \begin{align*}x=9\end{align*}
    3. \begin{align*}x=3\end{align*}
    4. \begin{align*}x=2\end{align*}
  4. ________ What is the result of expressing 37100000 in scientific notation?
    1. \begin{align*}3.71 \times 10^2\end{align*}
    2. \begin{align*}3.71 \times 10^7\end{align*}
    3. \begin{align*}0.371 \times 10^3\end{align*}
    4. \begin{align*}3.71 \times 10^{-1}\end{align*}
  5. ________ If Maria invested $200 in a savings bond that appreciates 8% compounded annually, how much money will she have at the end of 10 years?
    1. $631.78
    2. $216.59
    3. $431.78
    4. $416.59
  6. ________ What is the \begin{align*}y\end{align*}-intercept of the exponential function \begin{align*}y=4(0.5)^6\end{align*}?
    1. \begin{align*}y=0.02\end{align*}
    2. \begin{align*}y=0.5\end{align*}
    3. \begin{align*}y=6\end{align*}
    4. \begin{align*}y=4\end{align*}
  7. ________ If the mean temperature in Phoenix is \begin{align*}94^\circ F\end{align*} and is expected to increase by 0.5% annually, what will be the predicted mean temperature in 20 years?
    1. \begin{align*}98.8^\circ F\end{align*}
    2. \begin{align*}94.5^\circ F\end{align*}
    3. \begin{align*}118^\circ F\end{align*}
    4. \begin{align*}105^\circ F\end{align*}
  8. ________ For the following values of an exponential function, what is the common ratio? (0,2.5); (1,2.97); (2,3.54); (3,4.2); (4,5.01)
    1. 0.84
    2. 2.5
    3. 1.19
    4. 0.47
  9. ________ What is the result of \begin{align*}7.8 \times 10^{-3} -4.6 \times 10^{-4}\end{align*}?
    1. \begin{align*}3.2 \times 10^{-1}\end{align*}
    2. \begin{align*}3.2 \times 10^{-7}\end{align*}
    3. \begin{align*}73.4 \times 10^{-3}\end{align*}
    4. \begin{align*}7.34 \times 10^{-3}\end{align*}
  10. ________ The population of 978 students at a high school depreciates by 8% each year. If this continues, how many students will be in attendance 6 years from now?
    1. 256
    2. 593
    3. 722
    4. 385

Answers to Quiz II

  1. B
  2. D
  3. A
  4. B
  5. C
  6. D
  7. A
  8. C
  9. D
  10. B

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Jan 16, 2013
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CK.MAT.ENG.SE.1.Algebra-I---Honors.6.7
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