If Jose has 10 cookies and he ate 5 how many cookies does he have left

What is the value of this expression when b= 5 6 (2b-4)

How to solve it and what thw answer is

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?