Algebra 2--PARCC
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4 QuestionsShow answers
  • Question 1
    180 seconds
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    Q.

    This equation models the decay of 7.35 grams of a substance with a half-life of 2 days. Write an equivalent equation without a fractional exponent.

    answer choices

    R( d )=

    7.35(0. 250 )d.with a decay rate of 25%

    R( d )

    =7.35(0. 70 7)d with a decay rate of 70.7%

  • Question 2
    60 seconds
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    Q.

    The graph represents the temperature of tea for the first 120 min after it is poured into the cup.

    answer choices

    The tea started at 204 degrees and approached 114 degrees over time

    The tea started at 204 degrees and approached 68 degrees over time

    The tea started at 221 degrees

    The tea started at 204 and approached 34 degrees over time.

  • Question 3
    180 seconds
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    Q.

    A bank offers a savings account that accrues SIMPLE interest annually based on an initial deposit of $500. If S(t) represents the money in the account at the end of t years and S(5)=575,write a function that could be used to determine the amount of money in the account over time

    answer choices

    S(t) = 500 + 15t

    S(t) = 15(500)t

    S(t) = 500(15)t

  • Question 4
    300 seconds
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    Q.

    Decide if the population growth is linear or exponential and find the equation.

    answer choices

    The best equation for this situation is P(t)=4.95+0.229t

    The best equation for this situation is P(t)=5.35+0.228t

    The equation P(t)=5.24(1.030)t best fits the situation

    P(t)=5.35(1.029)t is the best equation

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