Answer:
Russian Economy will grow by 14.46 times using 9% per year growth for 31 years.
Explanation:
Growth Rate = g = 9% = 0.09
Number of years = n = 31 years
Number of time economy grow = ( 1 + growth rate )^number of years
Number of time economy grow = ( 1 + g )^n
Number of time economy grow = ( 1 + 0.09 )^31
Number of time economy grow = 14.46 times
So, Russian Economy will grow by 14.46 times using 9% per year growth for 31 years.