What is the value for x (5x+15) (3x-3)

The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is find the pressure exerted when the temperature of the gas is 380 degrees f show work for the

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?