Anyone else going through a hard time right now and if so why

What is the value of the expression below? (81^2)^1/8

Long division the problem is 40 ➗ 348 = ?

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