CPM Homework Help : CCA Problem 5-85

Identify the following sequences as linear, exponential, or other. For the linear and exponential sequences, identify the rate of change and whether it is a constant that is added or multiplied.

$12,144,1728,\dots$
Hint (a):
Do you have to add or multiply to get this sequence of numbers?
Answer (a):
exponential; multiply by $12$

$0,5,10,15,20,25,\dots$
Hint (b):
Do you have to add or multiply to get this sequence of numbers?
Answer (b):
linear; add $5$

$0,4,16,36,64,\dots$
Hint (c):
Refer to parts (a) and (b).

$1.5,2.25,3.375,5.0625,\dots$
Hint (d):
Refer to parts (a) and (b).