Which of the following best shows the commutative property of addition? 4 + 5 = 9
4 + 5 = 4 + (2 + 3)
4 + 5 = 4 - (-5)
4 + 5 = 5 + 4

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?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?