HELP NEED ANSWER ASAP Angelica bought some novels from a bookstore. She bought 12 novels, and each novel cost the same price. She paid a total of $120 including a $13 discount off the total price. Which equation could be used to find x, the cost of each novel Angelica bought? A. 12x + 13 = 120 B. 120x - 12 = 13 C. 12x - 13 = 120 D. 13x - 120 = 12

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.