Question

Please help me find the equation of the problem and the total pay of the problem

Answer 1

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`