A 16-foot ladder is leaning against a wall and the bottom of the ladder is 7 feet from the bottom of the wall. How high up the wall is the ladder touching?
round to the nearest tenth

The party planning committee has to determine the number of tables needed for an upcoming event. if a square table can fit 8 people and a round table can fit 6 people, the equation 150 = 8x + 6y represents the number of each type of table needed for 150 people.