Need some on geometry question : )

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

How many $20 bills do you need to have to make $280

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line