Sam sells necklaces for $10 each. each necklace costs her $5 to make. she also has $5,000 in fixed costs per year for her jewelry business. how many necklaces must she sell in order to make a profit of $1,000 in one year? a.200 b.600 c.100 d.1200

The answer is D, 1200, because 1200 multiplied by 10 is 12000 but you have to divide be 2 because it costs 5 dollars to make. 1200×10=12000÷2=6000

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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.