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Sharita does special typing jobs for scientists. she charges $13 for the first 3 pages and $3 for each additional page of scientific typing. sonia, a biologist, paid $103 to have a research paper typed. how many pages long was sonia's paper?

Respuesta :

Sharita does special typing jobs for scientists. she charges $13 for the first 3 pages and $3 for each additional page of scientific typing. sonia, a biologist, paid $103 to have a research paper typed. Here's our equation:

[tex]13+3(n-3)=103[/tex]

[tex]13+3n-9=103[/tex] 

[tex]3n+4=103[/tex]

[tex] 3n=33[/tex]

Hope I helped!
For edmentum

the answer is 34

three pages cost $13 in remain Pages cost $3 each, for a total of $106. in = the number of pages typed and in -3 = the number typed at $3. here is the equation:

13+3(n-3) =106
13+3n-9=106
3n+4=106
3n=102
n=34
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