Pek

Questions and answers by visitors named Pek

Questions (5)

A certain bacteria population is known to triples every 90 minutes. Suppose that there are initially 100 bacteria.
1. 3 answers
2. 804 views
You want to have $600,000 when you retire in 20 years. If you can earn 3% interest compounded monthly, how much would you need
1. 9 answers
2. 3,717 views
A radioactive substance decays exponentially. A scientist begins with 140 milligrams of a radioactive substance. After 21 hours,
1. 2 answers
2. 1,195 views
Find the final amount of money in an account if $2,600 is deposited at 4% interest compounded annually and the money is left for
1. 4 answers
2. 3,430 views
Find the final hourly wage if a $11.50 starting wage is increased by 2.5% each year for 8 years. Half the raise is given every 6
1. 7 answers
2. 1,539 views

How do I set up this problem?
Thanks everyone! I got it solved!
Thanks very much for your help - and the correction (mistakes happen, especially typos), but I'm sure when I say it was a brief mention since it's an algebra class doing pre-calc.
What if you're trying to figure out the principle?
My teacher briefly mentioned exponential growth, exponential decay, comping interest, and exponential growth/decay continuous.
Thank you!
Which formula do I use and how do I set it up?
How do I know which formula to use and how do I set it up?
My question is how do I know which formula to use.

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