Determine the growth factor corresponding to $325 \%$ increase. a. 1.25 b. 3.25 c. 4.25 d. 325

Step 1 ：Express the percentage increase as a decimal: \(325\% = 3.25\)

Step 2 ：Calculate the growth factor by adding 1 to the decimal: \(1 + 3.25 = 4.25\)

Step 3 ：Final Answer: The growth factor corresponding to a $325 \%$ increase is \(\boxed{4.25}\)