A teacher writes a function to model the rate of completion on a test where C(n) represents
the completion rate and n represents the
number of students who have completed the
test over a class period. What would be an
appropriate domain of the function if the
teacher has 30 students in the class?

 30 students in the class.

Step-by-step explanation:

Domain is the set of all input values.

Given : A teacher writes a function to model the rate  of completion on a test .

C(n) represents  the completion rate

n represents the  number of students who have completed the  test over a class period.

Here , input variable = n

So, Domain= set of values for n

Since class has 30 students.

So, Domain = 30 students.

Hence, the appropriate domain of the function : 30 students.

boxplot e is the answer

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9