Which situation does the expression 4(-500) model? A) An airplane ascends at an average rate of 4 feet per minute for 500 minutes.
B) An airplane descends at an average rate of 4 feet per minute for 500 minutes.
C) An airplane ascends at an average rate of 500 feet per minute for 4 minutes.
D) An airplane descends at an average rate of 500 feet per minute for 4 minutes.

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

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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?