Answer:
292,968
Step-by-step explanation:
As we know,
Sum of a geometric sequence (S) = [tex]\frac{a(1-r^{n}) }{(1-r)}[/tex]
where,
a = first term of sequence,
r = the constant ratio,
n = number of terms in sequence.
So, according to the question,
a = 3,
r = 5,
n = 8.
by substituting the values in the above formula, we get;
⇒ [tex]S=\frac{3(1-5^{8}) }{(1-5)}[/tex]
⇒ [tex]292,968[/tex]
