Furniture builder pays $100 for the materials necessary to build one porch swing a store sells the swing for $250 what is the ratio of the cost in dollars of the materials of the sale price in dollars

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.

Y=-3x is the correct answer