# Exponential function - math word problems

#### Number of problems found: 75

• Exponential equation In the set R solve the equation: ?
• Exponential equation Find x, if 625 ^ x = 5 The equation is exponential because the unknown is in the exponential power of 625
• Exponential equation Solve for x: (4^x):0,5=2/64.
• Coordinate Determine missing coordinate of the point M [x, 120] of the graph of the function f bv rule: y = 5x
• 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.
• Log if ?, what is b?
• Logarithm Determine the number whose decimal logarithm is -3.8.
• Sequence Calculate what member of the sequence specified by ? has value 86.
• Subsets How many are all subsets of set ??
• Sequence - 5 members Write first five members of the sequence ?
• Interest What is the annual interest rate on your account if we put 32790 and after 176 days received 33939.2?
• Car value The car loses value 15% every year. Determine a time (in years) when the price will be halved.
• Population What is the population of the city with 3% annual growth, if in 10 years the city will have 60,000 residents?
• Virus We have a virus that lives one hour. Every half hour produce two child viruses. What will be the living population of the virus after 3.5 hours? A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years?
• Geometric progression In geometric progression, a1 = 7, q = 5. Find the condition for n to sum first n members is: sn≤217.
• Demographics The population grew in the city in 10 years from 30000 to 34000. What is the average annual percentage increase of population?
• If you 3 If you deposit \$4500 at 5% annual interest compound quarterly, how much money will be in the account after 10 years?
• Decibel By what percentage does the sound intensity increase if the sound intensity level increases by 1 dB?
• Investment 1000\$ is invested at 10% compound interest. What factor is the capital multiplied by each year? How much will be there after n=12 years?

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