if 1 cubic ft of clay weighs 150 and the model weighs 1.3, then the model is 1.3/150 cubic feet. multiply by 12 to get in cubic inches.sp its 15.6/150 cubic inches.An artist plans to make a large sculpture of a person out of solid marble. She first makes a small scale model out of clay, using a scale of 1 inch = 2 feet. The scale model weighs 1.3 pounds. Assuming that a cubic foot of clay weighs 150 pounds and a cubic foot of marble weighs 175 pounds, how much will the large marble sculpture weigh? Explain your reasoning.

next, if the scale is 1 in= 2 ft, then 1 cubic inch= 8 cubic ft. so, multiply 15.6/150 by 8= 124.8/150 cubic ft.

now multiply by 175, the weight of a cubic ft of marble. so the answer would be about 145.6 pounds