When writing about Washington, DC, for marketing or communications purposes, is it Washington, DC or Washington, D.C?

Hello! Can you clarify the rule on states? The entry indicates that they should be spelled out in full in the body of a story, but then shows abbreviations. Thank you!

Should one include the umlauts in Mötley Crüe?

Hello, when discussing the House Republican Conference, would we capitalize "conference" or lowercase?

Per the entry on mixed numbers, would this be "2 1/2 decades"?

[He sat on death row for two-and-a-half decades.]

When writing about the core values upon which this country was founded, ...Value1, Value2, etc., are those values proper nouns/capitalized? Individual Freedom as opposed to individual freedom, Self-Reliance vice self-reliance, and so on. 

My reading of AP style is that the word "nonnative" is not hyphenated, though it doesn't seem to be explicitly stated. The hyphenated "non-native" is the preference of the MW dictionary, and also is the more common spelling in both questions and answers in the "Ask the Editor" section. I am asking about generic references such as "nonnative fish" rather than a "non-Native Hawaiian." Could you please confirm that the word "nonnative" is not hyphenated, despite the double consonant?

Hi! In the case of date ranges of days, would they be spelled out, or would I use numerals? Ex: "Symptoms occur 1-9 days after ingestion" or "Symptoms occur one to nine days after ingestion"
Additionally, if the date range starts with a number lower than ten and concludes with one above ten, would both be numerals, or would both be written out? Thanks!

I am working on an infographic that uses a fraction. The proposed sentence is 'Over 2/3s of farmers...' 

This looks weird to me, but I may be stuck with the fraction in number form. Is the above correct? 

Thank you, as always, for your help.

Which is correct: by word of mouth or by word-of-mouth? 

How do I correctly write a 5K race on first reference, when it is not in a headline?
This is for a photo caption. 

When quoting a written report published by another company, is it appropriate to adjust style to our own norms, or keep things exactly as is in the original? For example, if the company we're quoting does not use periods in the abbreviation for the United States, but we do, what's the right approach?

Do you capitalize "Treasury" when talking about the "secretary of the Treasury" position in general, but not using it as a title before a person's name? 

Please end this argument! When quoting someone should it be A or B:

A: “For over four decades, Sunriver Music Festival has featured some of the most accomplished painters and photographers in the region. The collaboration is a beautiful experience for all involved,” SRMF Executive Director Meagan Iverson said. 

B:  “For over four decades, Sunriver Music Festival has featured some of the most accomplished painters and photographers in the region. The collaboration is a beautiful experience for all involved,” said Meagan Iverson, SRMF Executive Director. 

Using "said" at the VERY end seems too clunky but I want to follow AP style.

What is the correct style for water skiing/water-skiing/waterskiing? And does the same rule apply to water ski, water skier, etc.?

Can you help with this predicament with the word 'athletics.' We are crafting a leadership letter where there are multiple references to this word, but, in some instances, it seems natural/better sounding to use singular verbs, but in others, plural verbs sound better. The problem is the inconsistency that it presents. Here are some examples within this one letter:

Plural:

 

 

Singular:

 

Is there any guidance you can give us?