When you subtract two positive integers is result always a positive integer

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

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?