Answer: A. –1.2%
Step-by-step explanation:
Since, the initial sum of the stocks = $ 10,335.24
While, the final sum of the stocks at the end of the day = $ 10,215.78
Thus, the percentage change in the sum of stocks
=
=
=
=
=
⇒ Option A is correct.
Answer:
The second alternative is correct
Step-by-step explanation:
We have been given the expression;
The above expression can be re-written as;
On the other hand;
Therefore, we have;
Answer:
$6370
Explanation:
The simple interest formula gives us the final amount A given the principal amount P:
where r is the interest rate and t is the time interval.
Now in our case we have
P = 2800
r = 4.25/100
t = 30 years
therefore, the above formula gives
which simplifies to give
Hence, the account balance after 30 years will be $6370.