Oscar and Maria each wrote an equation that they felt represented the proportional relationship between length in centimeters and length in inches. They each referred to a table that compared centimeters to inches. One entry in the table paired 127 centimeters with 50 inches. Who wrote the correct equation that would relate centimeters to inches? Explain why. Oscar wrote the equation c = 2.54i, and said that the unit rate 2.54 represents centimeters per inch.
Maria wrote the equation c = 0.394i, and said that the unit rate 0.394 represents centimeters per inch.