=please help, it's timed

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

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?