Answer:
Equation: P = $80N + $1,800
Total pay if Rita sells 27 copies: $3,960
Explanation:
We are given that her base pay is 1,800 dollars and she makes an additional 80 dollars for every copy (N) she sells, giving her total pay of P. Using this information, we can create an equation. We will multiply the money per copy by the number of copies, and then add her base pay onto it.
P = $80N + $1,800
Now, we are given that she sells 27 copies (N) of Math is Fun. We will substitute this into the equation we made and solve for P.
P = $80N + $1,800
P = $80(27) + $1,800
P = $2,160 + $1,800
P = $3,960
Rita would make $3,960 if she sold 27 copies.