Exponential function - examples
How many is subsets of set ??
Calculate what member of the sequence specified by ? has value 643.
The population grew in the city in 10 years from 14000 to 27500. What is the average annual percentage increase of population?
- Deposit 3
After a year had Martin on bank account € 1764. What was the interest rate when the initial deposit was € 1581?
- The city 2
Today lives 273000 citizens in city. How many citizens can we expect in 12 years if their annual increase is 2.5%?
Crystal grows every month 2.9 promile of its mass. For how many months to grow a crystal from weight 310 g to 482 g?
Determine the number whose decimal logarithm is -4.5.
- Half life
Determine the half life of bismuth, when bismuth weight from the original weight of 32 g was only 2 grams in 242 minutes.
Determine missing coordinate of the point M [x, 108] of the graph of the function f bv rule: y = 3x
if ?, what is b?
- Car value
The car loses value 15% every year. Determine a time (in years) when the price will be halved.
- Sequence - 5 members
Write first five members of the sequence ?
Paul put 10000 in the bank for 5 years. Calculate how much you will have in the bank if he not pick earned interest or change deposit conditions. The annual interest rate is 2.4%, and the tax on interest is 11%.
The town has 159,000 inhabitants. 40 years ago there were 185,000. How many people will live in town in 10 years if the average rate in population is as in previous years?
- The deposit
Deposit has been placed for one year at an annual rate of 4.5%. After the added interst amount rose to € 2,612.5. Determine initial deposit.
What is the annual interest rate on your account if we put 12700 and after 148 days received 12982.6?
The message is spreading that each day has doubled the number of people who know about it. All know message for 20 days. How long known it eighth people?
What is the population of the city with 3% annual growth, if in 10 years the city will have 60,000 residents?
- To the cinema
Jane at 8 am got message that all 1093 school pupils will go to the cinema. Within 20 min she said it to the three friends. Each of them again for 20 minutes said to the other three. In this way the message spread further. At what time all the children in.
- Exponential equation
In the set R solve the equation: ?