Capitalize the first word in a sentence. Capitalize proper nouns, such as the names of people and places. Capitalize the pronoun "I." Capitalize the first word of a quote. Capitalize days of the week, months, and holidays. Capitalize the titles of books, movies, and songs. Capitalize the first, last, and important words in titles.
In "Yours truly," you capitalize the first letter of each word if you are using it as a complimentary close in a letter, as it is a formal sign-off.
No, you do not capitalize the second word in the complimentary closing.
Yes, you should capitalize "Hydrocodone" as it is a proper drug name.
It is not necessary to capitalize pronouns in titles unless they are at the beginning of the title.
You only need to capitalize the word "billion" if it is the first word of the sentence...or if it is actually someone's name, or any other proper noun.
15 billion is correct unless there is some reason to capitalize the word billion, perhaps in a title.
No. It's not a proper noun.
1 billion minutes = 1,901.32 years
0.0222
45 billion is 5 billion away from 50 billion. That is not very close at all, but it is closer to 50 billion than it is to 50 million, for example.
0.0222
45 billion.
45 billion
45 billion trillion.
45 billion, 672 million, 345 thousand, 618
around 45 billion to 50 billion