The 12 members of the Statistics Department at Chance University consist of 4 who are married and 8 who are single. Three members of the department are sequentially selected at random to serve on the curriculum subcommittee. What is the probability that there is exactly one single faculty member on the subcommittee , given that the first member selected is married?

answer: the common difference is -0.10

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6