In which part of a business letter should you briefly communicate your purpose for writing?

If you are proposing a business collaboration, or wanting support from a company, you would communicate your purpose for writing in the beginning of the letter. And then carry on to communicate more in-depth why it would be a good decision of them to back you. You need to give them reasons and facts to make it professional and convincing.

in at least 150 words, discuss the tone of the narrator in "i stand here ironing," and explain how it impacts the telling of the story