$9.56
Explanation:
3 pounds of ham is going to cost $8.97.
To get the 1/5 pound price, multiply the cost of a pound of ham by 1/5 (0.2 in this case) to get $0.568. The final step is to just add the prices together.
Using conditional probability, it is found that there is a 0.2273 = 22.73% probability that a student took AP Chemistry, given they did not get into their first-choice college.
Conditional Probability
In which
- P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
- P(A) is the probability of A happening.
In this problem:
- Event A: Did not get into their first-choice college.
- Event B: Took AP chemistry.
According to the chain given, the percentages associated with not getting into their first-choice college are:
Hence:

The probability of both not getting into their first-choice college and taking chemistry is 0.1375, hence 
Then, the conditional probability is:

0.2273 = 22.73% probability that a student took AP Chemistry, given they did not get into their first-choice college.
To learn more about conditional probability, you can take a look at brainly.com/question/14398287
The average rate of change can be determiined as,