QuestionAttempt 1: 10 attempts remaining.
The length $m$, in inches, of a model train is directly proportional to the length $r$, in inches, of the corresponding real train. (a) Write an equation that expresses $m$ as a function of $r$, using $k$ for the constant of proportionality. $\square$ help (equations) (b) An $\mathbf{N}$ scale model train is $1 / 160$ th the size of a real train. What is the constant of proportionality? $\square$ help (numbers) What is the length, in feet, of a real locomotive if its $\mathbf{N}$ scale model is 11 inches long? $\square$ feet. help (numbers) (c) An HO scale model train is $1 / 87$ th the size of a real train. What is the constant of proportionality? $\square$ help (numbers) What is the length, in inches, of an HO scale model if its real locomotive is is 75 feet long? $\square$ inches. help (numbers)