Name ________________________________________________ Date_______________
Exponential Functions: Geometric Sequences
Mini Assessment
1.
Consider the sequence: 4, -12, 36, -108, …
Part A: Identify whether the function is an arithmetic sequence or a geometric
sequence and justify your answer.
Part B: Write an explicit formula that could be used to find any term in the sequence.
Part C: Write a recursive formula for the sequence.
2. Shereena made the following table:
x
f(x)
1
4
2
8
3
16
4
32
Part A: Shereena can’t decide if the table represents an arithmetic or geometric
sequence. Explain to Shereena what type of function this table represents and how you
determined this.
www.AlgebraNation.com Part B: Graph the table and then also use this table to explain and justify your reasoning
for Part A.
www.AlgebraNation.com