Massachusetts Tests for Educator Licensure (MTEL ) www.mtel.nesinc.com
Mathematics (09) Practice Test - MTELs Mathematics (09) Practice Test - MTELs
Mathematics (09) Practice Test42. Carbon 14 decays exponentially with a half-life of 5750 years,the time it takes for one half of the carbon 14 to decay. If C 0isthe original concentration of carbon 14, which of the followingfunctions correctly approximates C(t), the quantity remainingas a function of time, t, in years?A. C(t) = C 0e – 0.000052tB. C(t) = C 0e – 0.00012tC. C(t) = C 0e – 2875tD. C(t) = C 0e – 5750t43. Use the expression below to answer the question thatfollows.Bn(x + 5) 4 – 2Bn(x + 5) 3Which of the following is equivalent to the expression above?A. –2Bn(x + 5)B.23Bn(x + 5)C. [Bn(x + 5)] –2D. [Bn(x + 5)] 2 326
Mathematics (09) Practice Test44. Which of the following is the graph of the function f(x) = Bn(2x + 1)?A. B.yy22–2 –1 1 2 3 4x–2 –1 1 2 3 4x–2–2–4–4C. D.yy22–2 –1 1 2 3 4x–2 –1 1 2 3 4x–2–2–4–445. Which of the following unit conversions is correct?A. 10 cm = 0.01 mB. 2 mm 2 = 0.02 cm 2C. 15 m 2 = 150,000 mm 2D. 8 cm 3 = 80,000 dm 327
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Mathematics (09) Practice Test44. Which of the following is the graph of the function f(x) = Bn(2x + 1)?A. B.yy22–2 –1 1 2 3 4x–2 –1 1 2 3 4x–2–2–4–4C. D.yy22–2 –1 1 2 3 4x–2 –1 1 2 3 4x–2–2–4–445. Which of the following unit conversions is correct?A. 10 cm = 0.01 mB. 2 mm 2 = 0.02 cm 2C. 15 m 2 = 150,000 mm 2D. 8 cm 3 = 80,000 dm 327
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