What is the standard form of 7+3^i/2-5^i

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

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect