Graphing Polynomial Functions — Unit test Answers
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21
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What are the values of a1 and r of the geometric series? 2 – 2 + 2 – 2 + 2
A
a1 = 2 and r = –2B
a1 = –2 and r = 2C
a1 = –1 and r = 2D
a1 = 2 and r = –122
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What is the difference?
A
StartFraction x minus 1 Over 6 x + 4 EndFraction
B
StartFraction negative 1 Over 4 x + 2 EndFraction
C
StartFraction 1 Over x + 2 EndFraction
D
StartFraction x minus 1 Over x squared + 3 x + 2 EndFraction
23
What are the values of and r of the geometric series?1 + 3 + 9 + 27 + 81
A
a 1 = 1 and r = one-third
B
a 1 = one-third and r = 1
C
a 1 = 1 and r = 3
D
a 1 = 3 and r = 1
24
A high-interest savings account pays 5.5% interest compounded annually. If $300 is deposited initially and again at the first of each year, which summation represents the money in the account 10 years after the initial deposit?
A
Sigma-Summation Underscript n = 1 Overscript 10 EndScripts 300 (0.055) Superscript n minus 1
B
Sigma-Summation Underscript n = 1 Overscript 10 EndScripts 305.5 (1.055) Superscript n minus 1
C
Sigma-Summation Underscript n = 1 Overscript 10 EndScripts 316.5 (0.055) Superscript n minus 1
D
Sigma-Summation Underscript n = 1 Overscript 10 EndScripts 316.5 (1.055) Superscript n minus 1
25
Which expression is equivalent to divided by x + 1?
A
StartFraction 3 x Over x + 1 EndFraction times StartFraction 1 Over x + 1 EndFraction
B
StartFraction 3 x Over x + 1 EndFraction divided by StartFraction 1 Over x + 1 EndFraction
C
StartFraction x + 1 Over 1 EndFraction divided by StartFraction 3 x Over x + 1 EndFraction
D
StartFraction x + 1 Over 3 x EndFraction times StartFraction x + 1 Over 1 EndFraction
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