Two people start walking at the same time in the same direction. one person walks at 8 mph and the other person walks at 2 mph. in how many hours will they be 4.5 miles apart?

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