Sophia invested some money in a bank at a fixed rate of interest compounded annually. The equation below shows the value of her investment after x years:

f(x) = 500(1.05)x

What was the average rate of change of the value of Sophia's investment from the second year (551.25) to the fourth year(607.67)?
A. 14.13 dollars per year
B. 50.00 dollars per year
C. 28.25 dollars per year
D. 56.50 dollars per year

Question

Sophia invested some money in a bank at a fixed rate of interest compounded annually. The equation below shows the value of her investment after x years:

f(x) = 500(1.05)x

What was the average rate of change of the value of Sophia's investment from the second year (551.25) to the fourth year(607.67)? 
A. 14.13 dollars per year
B. 50.00 dollars per year
C. 28.25 dollars per year
D. 56.50 dollars per year

akgorgeous · Answer

@mathstudent55 @518nad @princeharryyy

princeharryyy · Answer

the value of 4th year is not right, that's y I didn't get the right answer but close to it.

princeharryyy · Answer

607.75-551.25 /  4-2 = 28.25

princeharryyy · Answer

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