Answer:
Question 13: For age groups y=1 and y=1.3 response is 8 microseconds.
Question 14: The club was making a loss between 11.28 and 4.88 years.
Step-by-step explanation:
Question 13:
The age group y for which the response rate R is 8 microseconds is given by the solution of the equation

We graph this equation and find the solutions to be

Since only positive solutions for y are valid in the real world we take only those.
Thus only for age groups y=1 and y=1.3 the response is 8 microseconds.
Question 14:
The footbal club is making a loss when 
Or

We graph this inequality and find the solutions to be
and 
Since in the real world only positive values for t are valid, we take the the second solution to be true.
Thus the club was making a loss in years 
Answer : amar makes $8 per hour
Answer:24%
Step-by-step explanation:
6 divided by 25 is .24
Step-by-step explanation:
1st digit : 1 / 2 / 4 / 5
4th digit : 0 / 2 / 4 / 6 / 8
Total number of sets = 4 * 10 * 10 * 5 = 2000.
Answer: B. 0.45
Step-by-step explanation:
From the given table, the total number of students = 137
The number of students are sophomores =35+42=77
Let A be the event that students are sophomores.
Then probability that students are sophomores is given by :

The number of sophomores who attended the jazz concert = 35
Let B be the event that students attended the jazz concert .
The probability that students attended the jazz concert and are sophomores is given by :

Now, the probability of that the student attended the jazz concert, given that the students is sophomore is given by :-
