# A certain radioactive element decays over t 1 time

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This is a sample of California Standards Test questions. This is NOT an operational test form. Test scores cannot be projected based on performance on released test questions. Copyright © 2008 California Department of Education.
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CALIFORNIA STANDARDS TEST Released Test Questions Algebra II 51 Bacteria in a culture are growing exponentially with time, as shown in the table below. Which table below correctly describes points of ( )3xthe exponential function fx=2?x– 2 – 1 f(x)– 18 – 6 – 2 B x– 2 – 1
Which of the following equations expresses the number of bacteria, y, present at any time, t?
t
)
t
)
If the equation y=2xis graphed, which of the following values of xwould produce a point closest to the x-axis? 1A B C D 3 CST20145 53 Which table below correctly describes points of ( )3xthe exponential function fx=2?A x– 2 – 1 f(x)– 18 – 6 – 2 B x– 2 – 1
0
0
0
3
0
CST20196 54 log6 40 =A log10 6 +log 10 40B log10 6 log 10 40C (log 10 6)(log 10 40) logD 10 40 log10 6 CST00199 18 This is a sample of California Standards Test questions. This is NOT an operational test form. Test scores cannot be projected based on performance on released test questions. Copyright © 2008 California Department of Education.
CALIFORNIA STANDARDS TEST Released Test Questions Algebra II 55 Jonathan wrote the equation log6 (x 4)on the board. He needs one clue for problem solving. Which fact provides the correct information that he needs to solve the equation? On a recent test, Jeremy wrote the equation x2 16 x 4. =+Which of the following x statements is correct about the equation he wrote? =0 A 60 =B 61 =C 44=0D 64=2CST10484
1
6
56 What is the value of log327?
2
3 C D CST00519 .57 If log2 0 301 and log 3 0 477, what is the approximate value of log 72? 6 9 .
C 0.861± D 1.857±
If xis a real number, for what values of xis the 3x 9equation =x 3 true? 3 A all values of B some values of C no values of D impossible to determine± CST00032
x
x
x
59 On a recent test, Jeremy wrote the equation x2 16 x 4. =+Which of the following x statements is correct about the equation he wrote? 4
4.
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