The equation below shows the formula for calculating the shipping cost C for book orders where p is the weight of the books in pounds there is a $3 handling fee on every order what statement is not true about the cost

The answer is

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.

A. -10 is the value of x