Final answer:
The annual increase in the value of the $10 silver certificate would be 116,900%.
Step-by-step explanation:
To calculate the annual increase in value of the $10 silver certificate, we need to find the percentage increase. The formula to calculate the percentage increase is:
Percentage increase = [(Final value - Initial value) / Initial value] x 100
Using the given information, the initial value of the silver certificate is $10 and the final value is $11,700. Plugging these values into the formula, we get:
Percentage increase = [(11,700 - 10) / 10] x 100
Simplifying this equation, we get:
Percentage increase = 116,900%
Therefore, the annual increase in the value of the certificate would be 116,900%.