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Xoxox · Answer 1 · 2023-09-29T12:32:22+0000

The equation is

$P=1900+90\cdot N$

Whatever happens, she receives 1900; if she sells copies of that specific book, he receives more (additional) money. The total pay is thus what she receives whatever happens plus the additional money (which is a product of 90 with the number of sold copies of that specific book).

For the second part, we just need to evaluate N in 29.

$P(29)=1900+90\cdot(29)=4510$

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