exam Maths Puzzle Numerical Ability

simplify

-9t2-8

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exam Other Question

find the domain of x-2y=1 if the range is (-2,0,5,8) A ball is thrown downward from a window in a tall building. Its position at time t in seconds is s=16t^2+32t, where s is in feet. How long (to the nearest tenth) will it take the ball to fall 149 feet?