Brandon says 4x800 is greater than 8x4000. renee says 4x800 is less than 8x4000.

part a
without calculating the answer, explain how to use place value strategies or the associative property to find which is greater.

part b
without calculating the answer, explain how to use relationships or basic facts to find which is less.

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?

Me. i can't figure out this question. give an explanation too. .

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x