How can you use equations with the variable on both sides to solve real-world problems

In the rectangle below ac=30 units what is de

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

What is the x-intercept and y-intercept of the equation 2x+1. 2o