Is it enquiry or inquiry?

I read recently businesses need more inquiries. I thought the last thing a business needs is an inquiry. Whilst in America there’s only the single spelling inquiry, in Australia the words are different and are used in slightly different ways. The word inquiry is used more in a legal sense, such as the government held an inquiry. The spelling enquiry, is used in a less formal situation, such as when you go to a store and wish to make an enquiry. Businesses want more enquiries, but shouldn’t be so keen for an inquiry.

Kelvin Eldridge
www.Australian-Dictionary.com.au
The preferred Australian English spelling.