The back of a park bench is in the shape of a regular trapezoid, as shown in the figure. A trapezoid has a base of 6 feet, height of 3 feet, and top side length of 4 feet.

What shapes can the trapezoid be divided into to find its area?

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

If i think this is what your asking, he should look at the grams or pounds/ounces and compare the to their cost then max can identify which one is proportional and which is not ( i think xd)