Simplify (2t^_3)^3(0.4r)^2
checking answers i got 1.28r^2 over t ^-6

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

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?

How to find the exponential function y=ca^x, with points (1,2) and (2,1)