Pls help it's a redo assignment a. 2 1/2 x 3 1/3
b. 4/9 x 2 1/4
c 3 1/4 x 1 1/2
d. 7 1/5 x 1 1/3
e 6 1/3 x 1/2
f 4 1/5x 20
g 3 x 2 2/3
h 2 5/6 x 1 3/5
i 15 x 1 1/3

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?

Having a hard time understanding this question (see attachment).

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.