Zaira spent 55 hours in 2 weeks working on a science project. she worked 32 hours the first week. write and solve an addition equation to find the amount of time she spent working the second week.

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15