Write the first four terms of the geometric sequence with the given first term, a1, and common ratio, r.
-$$a _ { 1 } = 4 ; r = \frac { 1 } { 2 }$$
A) $4 , \frac { 9 } { 2 } , 5 , \frac { 11 } { 2 } , \ldots$
B) $2,1 , \frac { 1 } { 2 } , \frac { 1 } { 4 } , \ldots$
C) $4,8,16,32 , \ldots$
D) $4,2,1 , \frac { 1 } { 2 } , \ldots$

Question

Quizplus · Accepted Answer

The first term is 4, and each subsequent term is obtained by multiplying the previous term by the common ratio $\frac{1}{2}$. Thus, the sequence is $4, 4 \times \frac{1}{2} = 2, 2 \times \frac{1}{2} = 1, 1 \times \frac{1}{2} = \frac{1}{2}, \ldots$.

Write the First Four Terms of the Geometric Sequence with the Given