Yes, "Founders'" should be capitalized as it is a proper noun referring to the founders of a particular organization or group.
No, the word "smartphone" should not be capitalized unless it is at the beginning of a sentence.
No, the word "epitaph" should not be capitalized unless it is at the beginning of a sentence or part of a title.
The word "banker" should not be capitalized unless it is at the beginning of a sentence or part of a title.
No, the word "rif" is not always capitalized. It should only be capitalized if it is part of a proper noun or at the beginning of a sentence.
No, the word "fifteen" should not be capitalized in a date within a sentence unless it is the first word of the sentence.
It depends on the situation. If it's used as the name of a company or person, then it should be capitalized. But if you're just saying something like "the founders of this company are..." then it shouldn't be. Like the above contributor said, it depends. No, not in most cases. For example, in the sentence "The founders of Denver, Colorado lived over a century ago," the word "founders" is not capitalized, it is an improper noun. IF it is a person's last name, the name of a place, or any other form of proper noun, then yes, do capitalize it. Of course, if it is at the beginning of any sentence, capitalize it.
The word 'will' should be capitalized only when it is a person's name or the first word in a sentence. As a verb or common noun, it should not be capitalized.
The second word should not be capitalized
Yes, Sunday should always be capitalized.
As an abbreviation it should be capitalized.
No, the word "smartphone" should not be capitalized unless it is at the beginning of a sentence.
The word "banker" should not be capitalized unless it is at the beginning of a sentence or part of a title.
No, the word "epitaph" should not be capitalized unless it is at the beginning of a sentence or part of a title.
Yes, Greek should be capitalized.
Yes it should be capitalized.
No it shouldn't be capitalized.
Yes it should be capitalized.