If 12,025 was invested at 3.25% compounded monthly 3 years, how much interest will be earned

$1,229.75

Step-by-step explanation:

Lets use the compound interest formula provided to solve this:

P = initial balance

r = interest rate (decimal)

n = number of times compounded annually

t = time

First, change 3.25% into a decimal:

3.25% -> -> 0.0325

Since the interest is compounded monthly, we will use 12 for n. Lets plug in the values now:

Lastly, subtract A from P to get the interest earned:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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