The easiest way to do this is the following: if the amount increases with 7% each year, it means that you have to multiply the £400 by 1,07. Then you multiply that answer by 1,07 and one time again. The final answer is 490,0172
Log(10^-3) = log(0.001) = -3, and there are 3 zeros inclusive of the 0 before the decimal.
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He would be making 79000 after 4 years and I am guessing t means ten and that would be 94000.
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what you want me to asnwer
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