document.write( "Question 251522: Height of a ball. If a ball is thrown straight upward at
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document.write( "40 feet per second from a rooftop 24 feet above the
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document.write( "ground, then its height in feet above the ground t seconds
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document.write( "after it is thrown is given by
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document.write( "h(t)= 16t2 + 40t + 24.
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document.write( "a) Find h(0), h(1), h(2), and h(3).
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document.write( "b) Rewrite the formula with the polynomial factored
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document.write( "completely.
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document.write( "c) Find h(3) using the result of part (b).
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document.write( "If you can, please show the detailed work, thank you \n" );
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Algebra.Com's Answer #183198 by stanbon(75887) ![]() You can put this solution on YOUR website! Height of a ball. If a ball is thrown straight upward at \n" ); document.write( "40 feet per second from a rooftop 24 feet above the \n" ); document.write( "ground, then its height in feet above the ground t seconds \n" ); document.write( "after it is thrown is given by \n" ); document.write( "h(t)= 16t^2 + 40t + 24. \n" ); document.write( "a) Find \n" ); document.write( " h(0) = 24 \n" ); document.write( " h(1) = -16 + 40 + 24 = 48 \n" ); document.write( " h(2) = -64 + 80 + 24 = 60 \n" ); document.write( " h(3) = -144 + 120 + 24 = 0 \n" ); document.write( "------------------------------------ \n" ); document.write( "b) Rewrite the formula with the polynomial factored \n" ); document.write( "completely. \n" ); document.write( "h(t) = (-8)(2t^2 - 5t -3) \n" ); document.write( "h(t) = -8[2t^2 -6t + t - 3] \n" ); document.write( "h(t) = -8[2t(t-3)+(t-3)] \n" ); document.write( "h(t) = -8(t-3)(2t+1) \n" ); document.write( "------------------------------- \n" ); document.write( "c) Find h(3) using the result of part (b). \n" ); document.write( "h(3) = -8(0)(7) = 0 \n" ); document.write( "=============================== \n" ); document.write( "If you can, please show the detailed work, thank you \n" ); document.write( "=============================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |