Final answer:
If IR refers to the weekly interest rate and you're inquiring about the EAR in finance, the EAR can be calculated using the formula (1 + weekly interest rate)^52 - 1. This would result in an extraordinarily high EAR if the weekly interest rate is indeed 10%. However, there might be a misunderstanding as 10% weekly is an exceptionally high rate for most financial contexts.
Step-by-step explanation:
If IR stands for 'Interest Rate' and you're asking about the Effective Annual Rate (EAR), then it seems you might be a bit confused with the acronyms related to nutrition provided in your question. The EAR in the context of nutrition stands for Estimated Average Requirement, which is different from the financial term EAR, which stands for Effective Annual Rate. Assuming you are asking about finance, to calculate the EAR from a weekly interest rate, you use the formula for compounding interest:
EAR = (1 + weekly interest rate)number of weeks in a year - 1
In this case, if the IR is 10% per week, the calculation would be:
EAR = (1 + 0.10)52 - 1
This calculation involves raising 1.10 to the power of 52 (the number of weeks in a year) and subtracting 1. However, this would result in an unrealistically high number due to the power of compound interest applied weekly. This may indicate that there is a misunderstanding in the initial question or the term 'IR' might not have been used correctly.