The graph below models the value of a $20,000 cart years after it was purchased. Which statement best describes why the value of the car is a function if the number of years since it was purchased?

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.

There are 48 blue cards total

The answer would be d