Astudent works no more than 25 hours each week at a part-time job. write an inequality that represents how many hours the student can work each day. (how do you solve this)

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me