when solving a multi-step equation, which number do you "undo" first?

a the number on the opposite side of the equals side from the variable

b the number furthest from the variable (but on the same side of the equals sign)

c order doesn't matter - choose which one you want to do first

d the number touching the variable

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