Answer:
Betsy will save $121 in 5 weeks.
Step-by-step explanation:
We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..
To find the sum of our geometric sequence we will use
, where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.



Therefore, Betsy will save $121 in 5 weeks.
Answer:
It is 3*10^6 times bigger
Step-by-step explanation:
<u>9*10^-4</u>
3*10^-10
=9/3*10^(-4-(-10))
=3*10^6
1.925 or about 2
is the answer
<span>Roster form is a set of members placed between brackets, with each of the individual elements are separated by commas.
For example :
</span><span> {2, 4, 6, 8, 10, 12, ...}.</span>