I have to put my answer in scientific notation

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?

Factor the polynomial. b^2 + 4b + 4

Solve the equation. 2x - 8(x+1)= 6(2x - 3)