Answer:
Beatrice will accumulate $1230.72 at the end of the year.
Step-by-step explanation:
We can write:

for deposits
The first month would have only the deposit reflected in her balance, then, expanding some steps of the calculation would yield:

A geometric series is given by:

Translating our series to the short form:

plugin in the values for the 12 month gives:

6x=2x+48
-2 -2
4x + 48
divide bot numbers by 4. X is by itself and then you will have x=24
Answer:
= - 4 × 
Step-by-step explanation:
Note there is a common ratio between consecutive terms in the sequence.
r = - 8 ÷ - 4 = - 16 ÷ - 8 = - 32 ÷ - 16 = 2
This indicates that the sequence is geometric with n th term
= a 
where a is the first term and r the common ratio
Here a = - 4 and r = 2, thus
= - 4
← explicit rule