Explanation:
To do long division, follow the method pattern "DMS down".
D for divide.
M for multiply.
S for subtract.
Down is to bring down.
Use an example:
52 ÷ 2?
Divide 2 by the first digit of 52.
2 Whenever you divide, put the answer at the top.
2∫52
Multiply answer by number you are dividing by.
2
2∫52
4 When not dividing, put the work under the question.
Subtract.
2
2∫52
<u>4</u><u> </u>
1
Bring down the next digit.
2
2∫52
<u>4 </u>
12
Divide into the new difference 12.
26
2∫52
<u>4 </u>
12
Multiply the new digit.
26
2∫52
<u>4 </u>
12
12
Subtract.
26
2∫52
<u>4 </u>
12
<u>12</u><u> </u>
0 You stop when you get to 0. If you ran out of digits to bring down, write this as a remainder.
Answer: Choice B) Investment decreases by 3% each month
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Explanation:
We won't use the value 2500 at all.
The base of the exponential is 0.97
Set this equal to 1+r and solve for r
1+r = 0.97
r = 0.97-1
r = -0.03
The negative r value indicates we have exponential decay, so the value of the investment decreases by 3% each month.
Let's say you had $100 to start off. This would mean the investment would be worth $97 after one month is up.
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