Amie published her first book. She was given $20,000 and an additional $0.15 for each copy that sold. Her earnings,d, in dollars ,from the publication of the book are given d=20,009 + 0.15n where n is the number of copies sold. During the first year, Amie earned $22,100 from the publication and the sale of her book. How many copies of her book were sold?
2 answers:
Answer: 139 copies of her book were sold.
Step-by-step explanation:
Hi, to answer this question we have to analyze the information given:
Earnings (d)
<em>d= 20,009+0.15n
</em> Where "n" is the number of copies sold.
If she earned $22,100, we have to replace the value of d by the number given:
22,100 = 20,009 +0.15 n
Solving for n
22,100-20,009 = 0.15n
2,091=0.15n
2,091/15=n
139.4=n
n≅139 books (rounded)
Feel free to ask for more if needed or if you did not understand something.
<span>d=20,009 + 0.15n
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