A sum of money deposited at compound interest (compounded yearly) amounts to $4200 in 2 years and to $4494 in 3 years. What is the interest rate?	Choose the correct choice from the following answers:  A) 3%  B) 5%  C) 7%  D) 9%  E) 11%
4494 - 4200= 
<gadget id="calculator">4494 - 4200</gadget>
<output>294</output>
294   294 / 4200= 
<gadget id="calculator">294 / 4200</gadget>
<output>7/100 = around 0.07</output>
0.07= 7%   The answer is 7%.
<result>C</result>
A sum of money deposited at compound interest (compounded yearly) amounts to $4200 in 2 years and to $4494 in 3 years. What is the interest rate?