Answer:
Geometric Sequence 20, 10, 5, 2.5, ...
First term, a 20
Common ratio, r
10 ÷ 20 = 0.5 5 ÷ 10 = 0.5 etc.
12.1 is the answer
.....
$7.95-$2.25=x
Step-by-step explanation:
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see the attachment..........