Parcc Algebra Ii Practice Test With Answers '- 2014 Page 9
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23PARCC Algebra II Practice Test – Released April, 2014
Calculator Part (continued)
13.
A scientist places 7.35 grams of a radioactive element in a dish. The half-life of the
element is 2 days. After
days, the number of grams of the element remaining in the
( )
dish is given by the function
( ) . Which statement is true about the
equation when it is rewritten without a fractional exponent?
Select all that apply.
A.
An approximate equivalent equation is ( )
(
) .
An approximate equivalent equation is ( )
(
) .
B.
C.
The base of the exponent in this form of the equation can be interpreted to
mean that the element decays by 0.250 grams per day.
D.
The base of the exponent in this form of the equation can be interpreted to
mean that the element decays by 0.707 grams per day.
E.
The base of the exponent in this form of the equation can be interpreted to
mean that about 25% of the element remains from one day to the next day.
F.
The base of the exponent in this form of the equation can be interpreted to
mean that about 70.7% of the element remains from one day to the next day.
Page 9 of 23
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