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Answer:
It will take 10 years to have $20,000 on investment of $10,000.
Explanation:
Annual Rate of return = r = 7%
Compounded Value / Future Value = FV = $20,000
Investment Value / Present Value = PV = $10,000
Use Future value formula to solve this question:
Future Value = Present Value x ( 1 + Number of Year )^Number of year
FV = PV x 
$20,000 = $10,000 x 
= 
$2 = 
Log 2 = n log 1.07
0.30 = n x 0.03
n = 
n = 10.00
n = 10 year (rounded off to nearest year )
It will take 10 years to have $20,000 on investment of $10,000.
The difference between an inventor and an entrepreneur is that, an inventor develops new services and goods but he does not have them to the market. An entrepreneur risks resources may it be human, capital or natural in order to bring to the market improved and new products.
The risk which is incurred between entrepreneur and inventor is that, entrepreneur undergoes huge financial risks because a lot of money is being invested while inventor has low financial risk since there is no big investment which is being required.