Broccoil cost 3.14$ a pound at the market if mary bought 2.5 pounds what was the cost

Fast phone couldn’t copy and paste so i decided to right it down

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle