Given the geometric sequence where a_1 = 3 and r = √2 find a_9 a.] 48 b.] 48√2 c.] 64 d.] 64√2

To find n-therm of a geometric sequence, we are going to use the formula 
where:
is the term we are looking for
is the first term 
is the ratio 
is the position of the number in the sequence 

From the question we now that , , and . Lets replace those values into our formula to get:




We can conclude that in our geometric sequence ; therefore, the answer is A.

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