John is planning a 250 mile long road trip. His car gets 32 miles per gallon on the highway. Gas costs $3.50 a gallon. How much
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[] Answer []
[] Explanation []
-4.8n = 13
====================
Multiply Both Sides By 10:
-4.8n * 10 = 13 * 10
Refine:
-48n = 30
Divide Both Sides By -48:
=
Simplify:
N =
It represents a geometric sequence because it has a common ratio of 2.
In fact, a sequence is said to be geometric if any two adjacent elements are in the same ratio. In other words, if you choose any index and consider the two consecutive terms
and
, you have
no matter which index you chose. In your case, the next term in the sequence is always the double of the previous one, so the ratio between two consecutive terms is always 2, and the series is geometric with common ratio 2