The velocity (in feet/second) of a projectile t seconds after it is launched from a height of 10 feet is given by vt) = - 15.6t + 146. Approximate its height after 3 seconds using 6 rectangles

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question 4 please help!
The velocity (in feet/second) of a projectile t seconds after it is launched from a height of 10 feet is given by vt) = - 15.6t + 146. Approximate its height after 3 seconds using 6 rectangles.

It is approximatley blank feet.

(Round final answer to nearest tenth. Do NOT round until the final answer.)

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