Trying to get a 100 on every assigment because I wanna be top student in class :) So please help

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.

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25