The cost of a piece of ribbon, c, is directly proportional to the length of the ribbon, r. the cost of 8 meters of ribbon is $5.60. a. what is the cost per meter of the ribbon. b. what is the equation relating c and r. c. what is the value of c when r is 9 somebody !

A is $0.70.
You can divide $5.60 by 8 to get how much it costs for 1 meter.

B is $5.60 divided by R = C
I got this because $5.60 was divided by 8 (the length of the ribbon) and I got how much it costs.

C. If R is 9, and the price of the R per meter is still $0.70, then multiply 9 and $0.70 for $6.30

What are the options