I need answer please the answer is not k=1

What are the soultion(s) to the quadratic equation 40- x^2=0

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

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