Book Maths Puzzle Algebra

I am not sure how or if there is a solution for this:

solve for y: 1/2y + 2 = 1/6(3y-9)

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Book Other Question

I have a box with a square top. The front face of the box has an area of A=x^3-2x^2-2x-3. The height of the box is h = x^2 + x + 1. Find a formula for the rea of the top square in terms of x. The New Zealand relay team finished second in the 800-meter freestyle relay with a time of 8:14.80. What was the average time for the four New Zealand swimmers?