Which of the following situations involve a permutation?
select all the correct answers.

a) determining how many different ways 7 runners can be assigned lanes on a track for a race

b) determining how many 5-letter passwords can be made using the word "graph."

c) determining how many different groups of 10 students can be chosen to go on a field trip from a group of 25 students

d) determining how many different ways to choose 3 employees from a group of 9 employees.

e) determining how many different seating charts can be made placing 6 people around a table

f) determining how many different ways 4 cashiers can be chosen to work from a group of 6 cashiers.

A, B, E

Step-by-step explanation:

Permutations are involved when order matters, as in lane assignment, passwords, and seating charts.

When the end result is a "group of 10 students", "3 employees", or "4 cashiers", clearly order does not matter. One student, employee, or cashier is as good as another in these cases.

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: