# Exponential function - practice problems - page 7 of 9

#### Number of problems found: 172

- Maintaining 5136

Petr succumbed to a bank's tempting offer, opened an account, and deposited CZK 1,051 into it. The account bore interest at 1.4%, credited once a year. The fee for maintaining this account was only CZK 140 per year. After seven years, he enjoyed how his d - Deposited 5135

It was 1975, and Petr deposited the entire cash of 10,900.40 Euros in a savings account with 4% interest, credited monthly. He did not add anything to the book, and in exactly 15 years, he withdrew the entire amount in cash. How much did you choose? - BTC bubble

One of the world's experts in bubbles -- Prof. Robert Shiller, a Yale economist -- said Bitcoin "was an amazing example of a bubble" back in 2014. If you exchanged fiat US dollars $100 to BTC in 2010, now in 2017, have a value of 72.9 million dollars. Fin - Combined interest

Combined interest: Carol has deposited CZK 100,000 in the bank with an annual interest rate of 1.5%. The money was put into the account on 5.5.2016 and withdrawn all before Christmas on 20.12.2016. How much money did she withdraw?

- Compound interest

Compound interest: Clara deposited CZK 100,000 in the bank with an annual interest rate of 1.5%. Both money and interest remain deposited in the bank. How many CZK will be in the bank after three years? - Investment of the year

At the beginning of the year, my father invested EUR 1,000 in the bank at an annual interest rate of 3%. How many euros will the bank credit him with the deposit after eight months? (compound interest - from financial mathematics) - Single-celled 4642

Guts (a single-celled organism) under ideal conditions divides into two littles every 27 hours on average. How many would there be in 7 days if all the littles remained alive? - Population 4485

The population is 22000 people. With an annual increase of 1.4%, there will be 25,000 people. How many years will it be? - Equation: 4386

Solve the power equation: 2.1463 = 0.4179x^{0.419}

- Doubling

The message is spreading that each day has doubled the number of people who know about it. All know a message for 20 days. How long known it, eighth people? - Equation: 4197

Solve the equation: (4096^x) · 8! = 161280 - Determine 4104

Determine the value of x in this equation: (0.125^x) · 10^{4}= 5000 - Expression: 4085

Determine the value of x and y in the expression: x! · 10^y = 0.0504. - Interest rate

At what annual interest rate would we get an interest of 60 euros on a deposit of € 6,000 for three months?

- Equation: 3881

What is the solution of the equation: 2^x = 2/64 - Exponential equation

Determine the value of having y in the expression (3^y): (4^{-1})=36. Unknown y is a natural number greater than zero. - Determine 3861

Determine the value of f: 0.49^f = 0.7 - Exponential 3858

Determine m (solve the exponential equation - unknown in the exponent): 0.25 μm = 0.5 - Determine 3841

Determine the value of x: 2^x = (2^{-3}): 2

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