Ok here is the question with the picture

The answer is c :D brainliest pls

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be

download photomath it will give you the answer and show u the steps