Write Terms of a Geometric Sequence
-$$\mathrm { a } _ { 1 } = 5 ; \mathrm { r } = 4$$
A) $5,20,80,320,1280$
B) $20,80,320,1280,5120$
C) $5,9,13,17,21$
D) $4,20,100,500,2500$

Question

Quizplus · Accepted Answer

The terms of a geometric sequence are found by starting with the first term and multiplying by the common ratio $r$ for each subsequent term. Given $\mathrm { a } _ { 1 } = 5$ and $r = 4$, the sequence is $5, 5\cdot4, 5\cdot4^2, 5\cdot4^3, 5\cdot4^4$, which simplifies to $5, 20, 80, 320, 1280$.

Write Terms of a Geometric Sequence - a1=5;r=4\mathrm { a } _ { 1 } = 5 ; \mathrm { r } = 4a1​=5;r=4

Write Terms of a Geometric Sequence
- $\mathrm { a } _ { 1 } = 5 ; \mathrm { r } = 4$