Simplify the following.
1. (- 3r2 g) 2 (2rs2,

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

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?

Place the following steps in order to complete the square and solve the quadratic equation,