Frage 1
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Find the 25th term of the sequence
-7, -4, -1, 2......
a (25) = [blank_start]65[blank_end]
Frage 2
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Write a formula for the sequence
7, 11, 15, 19....
➡a (n) = [blank_start]4n + 3[blank_end]
Frage 3
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Write a formula for the sequence
5, 10, 15, 20
a (n) = [blank_start]5n[blank_end]
Frage 4
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A theater has 60 seats in the first row, 68 seats in the second row, 76 seats in the third row and so on. If the theater has 20 rows how many seats are in the theater?
[blank_start]2720[blank_end] seats
Frage 5
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Kirk has set up a savings account for his son. If Kirk deposits $100 into the account the first month, increasing the amount he deposits by $10 per month each month. How much will be in his account after 2 years?
[blank_start]5160[blank_end] dollars
Frage 6
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The distance an object falls per second, falling 16 feet in the first second, 48 feet in the second, 80 feet in the third, etc. What is the total distance an object at 10 sec?
[blank_start]1600[blank_end] feet
Frage 7
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Write a formula for the sequence
3, 9, 27, 81
a (n) = [blank_start]3(3)^n-1[blank_end]
Frage 8
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Write a formula for the sequence
10, 20, 40, 80, 160....
a (n) = [blank_start]10 (2)^n-1[blank_end]
Frage 9
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A ball is dropped from a height of 8 feet. The ball bounces to 80% of its previous height with each bounce. How high does the ball bounce on the fifth bounce?( to the nearest foot)
[blank_start]2.6[blank_end] feet
Frage 10
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A population of a town is 2400 in the year 2007. The population increased 5% each year. What was the population in the year 2010 to the nearest whole number?
[blank_start]7566[blank_end] people
Frage 11
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The temperature of a hot tub is increased 10% per hour. If the current temperature is 75°F , what will be the temperature of the tub after 3 hours? (to the nearest whole number)
[blank_start]91[blank_end]°F
Frage 12
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John starts a retirement account where he placed $50 into the account on the first month and increase by $5 per month. If he saves his way for the next 20 years, how much will the account contain at the end of 20 yrs?
$ [blank_start]1,446,000[blank_end]
Frage 13
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Write a recursive formula for the terms
16, 8, 4... (in decimals)
a (1)=[blank_start]16[blank_end]
a (n)= [blank_start]0.5a(n-1)[blank_end]
Frage 14
Frage
Find the next four terms of the recursive definition
a (1)=2
a (n)=a(n-1) +2
2, [blank_start]4, 6, 8, 10[blank_end]
Frage 15
Frage
Consider a (1)=2 and a (n)= a (n-1)•3.
Generate a (4)= [blank_start]54[blank_end]