The amount of money in a bank account increased by 21.5% over the last year. If the amount of money at the beginning of the year is represented by n, write an expression to represent the amount of money in the bank account after the increase.

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

your question is incomplete, write all the numbers in the sequence that it tells you.  

step-by-step explanation:

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol