Can someone please explain this??I don’t get it at all...I need help!!! Write the three pairs of parallel segments in triangle ASR

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?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?