Find the value of n.
(n. 5). 4 = (4.5). 2
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What is the product? (x2+3y+7) [yy+1)

Plz heeeeeeelp plz give me the answer

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second