Janell tutors math students and earns $25 an hour for each session. She spends about $150 a month on transportation and other costs related to tutoring.

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?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)