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Sharita does special typing jobs for scientists. She charges $13 for the first 3 pages and an additional $3 for each additional page of scientific typing. Sonia, a biologist paid $103 to have a research
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Sharita does special typing jobs for scientists. She charges $13 for the first 3 pages and an additional $3 for each additional page of scientific typing. Sonia, a biologist paid $103 to have a research paper. How many pages long is her paper

User Lee Duhem
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The First 3 pages cost $16 & the remaining pages cost $3 each, for a total of $106. Let n= the number of pages typed and n-3= the number of pages typed at $3

16+3(n-3)=106
16=3n-9+106
3n+7+106
9n+99
n=33
User Sheba
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