Which is an example of identity property of addition a. 7+0=7 b. 5x1=5 c. (4+3)+6=4+(3+8) d. 2+4=4+2

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

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?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8