Which question below is a permutation?

a how many different teams of four runners can a coach choose from a group of seven runners?

b you and three friends want to line up next to one another for a picture. how many ways can the picture be taken?

c you want to choose three pairs of shorts from five to go on vacation. how many groups of three pairs of shorts can you choose?

d how many groups of five movies can be chosen from 11?

You and three friends want to line up next to one another for a picture. How many ways can the picture be taken?

Step-by-step explanation:

B is a permutation because A, C, and D all ask for different groups, which means that they are combinations.

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)