book Maths Puzzle Numerical Ability

tiger and sergio have entered a race for charity. tiger can walk ya yard, and sergio can walk yards per second. tiger gives sergio a 180 yard head start.

who will be ahead at4

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book Other Question

Show EACH step in solving each of the following equations. Show which method (factoring, square root method, completing the square, or quadratic formula) you used to solve it and tell why.
a: (x + 2)^2 = 8 2x-3 over 3x sguared + 5x +2