D= (r+c)t
how do i solve for t?

What is the reflection image of (5,-3) across the line y = -x?

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

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?