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A ball is thrown upward and outward from a height of 7 7 feet. The height of theball, f(x), infeet, can be modeled by f

A ball is thrown upward and outward from a height of 7

7 feet. The height of theball, f(x), infeet, can be modeled by

f left parenthesis x right parenthesis equals negative 0.1 x squared plus 0.8 x plus 7

f(x)=0.1x2+0.8x+7

where x is theball's horizontaldistance, infeet, from where it was thrown.

a. What is the maximum height of the ball and how far from where it was thrown does this occur?

(Round to the nearest tenth as needed.)

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