Segment CD is shown on the graph which shows how to find the Y coordinate of the point that will divide into 5:2 ratio using the formula y=

49/6 is going to equal 8 1/6

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