Answer: Here is the answer hope that helps ( Thanks for the points) (Btw my teacher helped me with it)
Explanation:
Simplifying
b(x) = 18 + -0.5x
Multiply b * x
bx = 18 + -0.5x
Solving
bx = 18 + -0.5x
Solving for variable 'b'.
Move all terms containing b to the left, all other terms to the right.
Divide each side by 'x'.
b = 18x-1 + -0.5
Simplifying
b = 18x-1 + -0.5
Reorder the terms:
b = -0.5 + 18x-1