You put $900 into an account earning 2% interest compounded continuously. Find the amount in the account at the end of 12 years.

Given:

Principal value = $900

Rate of interest = 2% compounded continuously.

Time  = 12 years.

To find:

The amount in the account at the end of 12 years.

Solution:

If the interest compounded continuously, then the formula for amount :

Where, P is principal, r is rate of interest, t is numbers of years.

Putting P=900, r=0.02 and t=12, we get

Therefore, the amount in the account at the end of 12 years is about $1144.12.

4 puzzles in 3 hours

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950