AnswersPrecalculusModeling with Sequences and Series

Modeling with Sequences and Series — Quiz Answers

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1
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During a radio contest, 50 dollars is added to the prize money each time a caller answers the contest question incorrectly. The first caller has a chance to win 100 dollars Which equation represents the amount the 10 th caller receives if this caller is the first to answer the question correctly?

A
A sub 10 is equal to 50 plus open paren 10 minus 1 close paren times 100
B
A sub 10 is equal to 100 plus open paren 10 minus 1 close paren times 50
C
A sub 11 is equal to 50 plus open paren 11 minus 1 close paren times 100
D
A sub 11 is equal to 100 plus open paren 11 minus 1 close paren times 50
3

Juliana wrote the terms. negative 8 comma negative 4 comma 0 comma 4 comma 8 comma 12 What do these terms represent?

A
an arithmetic sequence
B
a geometric sequence
C
a geometric series
D
an arithmetic series
6

Brenda already has 200 dollars to put toward the purchase of a new laptop that sells for 450 dollars She will save 50 dollars each month, starting next month, until she can buy the laptop. Which of the following represents the amounts she will have each month, starting next month, until she can afford to buy the laptop (assuming there is no sales tax)?

A
0 dollars comma 200 dollars comma 250 dollars comma 300 dollars comma 350 dollars comma 400 dollars comma 450 dollars
B
200 dollars comma 250 dollars comma 300 dollars comma 350 dollars comma 400 dollars comma 450 dollars
C
250 dollars comma 300 dollars comma 350 dollars comma 400 dollars comma 450 dollars
D
50 dollars comma 200 dollars comma 450 dollars
7

Tyrone opens a savings account by depositing 75 dollars in August. He increases each month’s deposit by 10 dollars compared to the previous month’s deposit. Which of the following shows the amounts in Tyrone’s account from August through December?

A
75 dollars comma 85 dollars comma 95 dollars comma 105 dollars comma 115 dollars
B
85 dollars comma 95 dollars comma 105 dollars comma 115 dollars
C
160 dollars comma 255 dollars comma 360 dollars comma 475 dollars
D
75 dollars comma 160 dollars comma 255 dollars comma 360 dollars comma 475 dollars

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