Answer
The first five terms of the sequence are 7, 13, 31, 85 and 247. The sequence is not geometric.
Work Step by Step
$a_{n} = 4+3^{n}$ is the formula we are given for the nth term of this sequence. To find the first 5 terms, plug in n =1 ,2, 3... and solve. Since the resulting terms (7,13,31,85,247) are not terms multiplied by a common ratio to get the next term the sequence is not a geometric sequence, and cannot be represented by a standard formula for the nth term of a geometric sequence
