9.4: Rare Events, the Sample, Decision and Conclusion Homework PLEASE HELP! Should be easy but i cant figure out what I'm doing wrong when I do it from an online calculator?

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The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Ineed if you could explain and give me the answer you! this needs done

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?