Answer:
The answer to your questions is letter D
Step-by-step explanation:
We need to look for a number that has an 8 in the ten thousands that means a number after in the fifth position after the decimal point
A. 8,021 this number only has 4 numbers and we need five, then is incorrect.
C. 8,214,617 this number has a number 1 in the fifth position then is incorrect
B. 16,816 this number has a number 1 in the fifth position then is incorrect
D. 781,200 this number has an 8 in the fifth position then is the one we are looking for
6.24 hope this is the answer
Answer Interest rate = 12.3%
The compound interest formula is given by:
Where
A = Future amount
P = Present amount (Principal amount)
r = Interest rate in decimal form
n = No. of times compounded per year
t = time in years.
We can say that if:
Present amount = P
Future amount = 3P
r = 12.3/100 = 0.123
n = 1
t = ?
Substitute the values in the formula of compound interest:
Taking log on both sides.
Round off to nearest option
t ≅ 9 years
If the population quadruples every period say hour, that means the "rate of growth" is 300%, so whatever the current amount, increased by 3 times as much is 4 times the current amount, or a quadrupled amount.
