Given are the first three terms of a sequence that is geometric. Find a1 and r.
-$\frac { 2 } { 3 } , \frac { 8 } { 3 } , \frac { 32 } { 3 }$
A) $a _ { 1 } = \frac { 2 } { 3 } ; r = 4$
B) $\mathrm { a } _ { 1 } = \frac { 2 } { 3 } ; \mathrm { r } = 5$
C) $a _ { 1 } = \frac { 2 } { 3 } ; r = 1$
D) $a _ { 1 } = \frac { 2 } { 3 } ; r = 6$

Question

Quizplus · Accepted Answer

The first term $a_1$ is given as $\frac{2}{3}$. The common ratio $r$ can be found by dividing the second term by the first term: $r = \frac{\frac{8}{3}}{\frac{2}{3}} = 4$.

Given Are the First Three Terms of a Sequence That 23,83,323\frac { 2 } { 3 } , \frac { 8 } { 3 } , \frac { 32 } { 3 }32​,38​,332​

Given Are the First Three Terms of a Sequence That $\frac { 2 } { 3 } , \frac { 8 } { 3 } , \frac { 32 } { 3 }$