A store sells ice cream with assorted toppings. They charge $3.00 for an ice cream, plus 50 cents per ounce of toppings. If Elena’s ice cream cost $3.50 more than Jada’s ice cream, how much more didElena’s toppings weigh? *

According to this it appears that we may not have quite enough info for a perfect answer. Let’s say jada had an ice cream that was $ 3.50 this means she got an ice ram with one ounce of toppings

Now Elanes ice cream costs $3.50 more so she had 7 more ounces .50x7

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.