Question 1032586
It should be $20,000= $10,000*2.718281828459^(.0225x)

{{{A = P*e^(rt)}}}
{{{20000 = 10000*e^((0.0225)x)}}}
Using www.wolframalpha.com for the calculation,
we get x = 30.8065
Using wolfram again for 10000*2.718281828459^(.0225*30.8065)
we get 19999.98138881
Finally lets check 20000 = 10000*2.718281828459^(.0225*x)
This also produces x = 30.8065 as well
I hope this helps.