Part II. 1. Tara lives in a state where there is no sales tax. She bought 7 tacos and paid with a $20 dollar bill.
Her change was $9.50
a. Define the variable and represent the situation with
an equation:
b. Solve this equation using a graph.
c. Explain how you obtained the answer from the graph.
lanton comnuter. She already has

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.