I'm not very good at math

Okay so, I am assuming the model is smaller so it would be 0.34m long.

The model has to be 200 times smaller than the actual plane
Divide 68/200 and you get 0.34
Then to check your answer, multiply 0.34 by 200 which is 68 meaning
0.34:68 is equal to 1:200

Assuming the model is bigger (just in case) it would be 13,600m long.

The in this scenario, the model has to be 200 times bigger so it would be 68(200) which is 13,600

Hope this helps

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.