
Directions: Read carefully.
1. 
Given a_{1}= 5 and a_{n}= a_{n}_{1} + 4, find the explicit formula.
Choose:



2. 
Given a_{n}= 3n  2, find the 19^{th} term.



3. 
Given the sequence:
{5, 7, 9, 11, ...}
a) Which explicit formula generates this sequence?
Choose:
b) Which recursive formula generates this sequence?
Choose:
c) What is the 11^{th} term of the sequence?
Choose:



4. 
There are 80 fish in a Koi pond. Each year the population decreases by 25%. Which explicit formula generates a sequence of fish in the pond each year? 




5. 
The first four terms of a sequence are:
8, 24, 72, 216, ...
Write a recursive function for this sequence.
Choose:



6. 
A private school purchases $26,400 of new computer equipment. For tax purposes, the school estimates that the equipment decreases in value by the same amount, $3050, each year.
Which explicit function can be used to find the estimated value of the computer equipment?


Choose:




7. 
Given the sequence:
a) Which explicit formula generates this sequence?
Choose:
b) Which recursive formula generates this sequence?
Choose:
c) What is the 5^{th} term of the sequence?
Choose:



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