Dominic has a bag that contains pineapple chews, cherry chews, and peach chews. He performs an experiment. Dominic randomly removes a chew from the bag, records
the result, and returns the chew to the bag. Dominic performs the experiment 53
times. The results are shown below:
A pineapple chew was selected 39 times.
A cherry chew was selected 9 times.
A peach chew was selected 5 times.
Based on these results, express the probability that the next chew Dominic removes
from the bag will be peach chew as a fraction in simplest form.

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?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?