Determine if the perimeter of a square is proportional to it’s side length

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?