Can the slope of the line represent density

What is 32+4 x (16 x 1/2) -2 show your work}

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer

The area of a square floor on a scale drawing is 64 square centimeters, and the scale drawing is 1 centimeter: 3 ft. what is the area of the actual floor? what is the ratio of the area in the drawing to the actual area? the area of the actual floor is square feet. the ratio of the area in the drawing to the actual area is 1 square centimeter: square feet.