7. A slingshot is used to propel a stone upward so that its height h...

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7. A slingshot is used to propel a stone upward so that its height h in feet after t seconds is given by, h(t)=16t2+88t+5. a) How high was the stone after 2sec ? b) Find the maximum height of the stone. c) At what time(s) was the stone 117ft high? 8. The graph of a quadratic function, f(x)=ax2+ a) Find the vertex and axis of symmetry. b) Solve ax2+bx+c=0. c) Is the sign of a positive or negative

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