So...
Interdependance of operations and finance practicully explains the associations between operations and finance.
You can simply state that finances available will influence the operations of the business in what processes are able to be completed, while the inverse is also true- the operations of the business can determine the financial standings of the business in terms of pricing, financial planning and implementation etc.
Relationship marketing is the process of making and maintaining long-term relationships with customers (primarily for continued patronage and a form of marketing).
Dont forget to provide examples where relevant.