Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain.

a. a_n = 9 − 3(n − 1) where n ≤ 9
b. a_n = 9 − 3(n − 1) where n ≥ 1
c. a_n = 9 − 6(n − 1) where n ≤ 9
d. a_n = 9 − 6(n − 1) where n ≥ 1

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)