For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. x 3 5 7 y 6 10 14

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

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Percent increase and decrease. original number: 45 new number: 18