# Exponential function + reason - math problems

#### Number of problems found: 3

• Population growth
How many people will be on Earth from two people for 5,000 years, if every couple has always 4 children, (2 boys and 2 girls) at the age of 25-35, and every man will live 75 years?
• Saving 9
An amount of \$ 2000 is invested at an interest of 5% per month. If \$ 200 is added at the beginning of each successive month but no withdrawals. Give an expression for the value accumulated after n months. After how many months will the amount has accumula
• 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?

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Exponential function - math problems. Reason - math problems.