The scientist measures the change in the temperature of a chemical solution. at the start of the experiment the solution is at a temperature of -14.96°c what temperature does grease differences 2.9°c each hour.

part a: write an expression that can be used to find the temperature of the solution after 3 hours.

part b: what is the temperature of a solution of for 3 hours rounded to the nearest whole degree estimate to show your answer is reasonable .

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?

Icould really use some with this question.

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)