Please help! I will mark brainliest!

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

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?