Answer:
17
Step-by-step explanation:
Tens place is 2
look to teh right
5> or = to 5 so round up:
412,830
a geometric sequence is a bunch of numbers where you can get from a number to the next number by multiplying the previous number by a certain number
might be confusing so here's an example
1,2,4,8,16
each term is multiplied by 2 to get next term, that number that each term is multiplied by is called the common ratio
formula for geometric sequence is
![a_n=a_1(r)^{n-1}](https://tex.z-dn.net/?f=a_n%3Da_1%28r%29%5E%7Bn-1%7D)
where
is nth term
is first term
r is teh common ratio
n=which term
in our example
1,3, 9, 27, 81
each term is being multiplied by 3 so it is a geometric sequence and thus r=3
also first term is 1 so ![a_1=1](https://tex.z-dn.net/?f=a_1%3D1)
so the formula is
or in function notation ![f(n)=1(3)^{n-1}](https://tex.z-dn.net/?f=f%28n%29%3D1%283%29%5E%7Bn-1%7D)