Is 25, 19, and 13 an arithmetic or geometric sequence?

A geometric sequence is one in which any term divided by the previous term is a constant.

This sequence would be geometric if 19/25 = 13/19.  Are those equal?

In an Arithmetic Sequence, the difference between one term and the next is a constant.

This sequence would be arithmetic if 19-25 = 13-19.  Are those equal?

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3

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