Answer:
It's 3.75 or 15/4
Explanation:
When you put it in proper form, it becomes a4= 30 x (1/2)^3, when computed, it equals 3.75. Thank you.
15/4.
4th term = a1 r^3
= 30(1/2)^3
= 30/8
= 15/4.
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