Alocal museum charges $25 per adult and $12 per child for admission fees. at the end of a day, the museum made $9,014 in total admission revenue, not including sales tax, and had a total of 450 guests. the system of equations below can be used to model the number of guests that were children, x, and the number of guests that were adults, y.

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.