Find k where y varies directly as x, and the following are true.
y = 2 when x = 16

Maren is buying carpet for her rectangular living room. the room is 4.8 yards wide and 5.2 yards long. how much carpet does she need to buy? enter your answer as a decimal in the box. yd2

Astock has a 25% probability of increasing by $10 and a 75% probability of decreasing by $5. what is the stocks expected increase or decrease?

Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter?