<span>close to twenty-two years
I hope this helped ya :)</span>
The answer is:
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"no error".
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The comma is correctly placed before the conjunction "for"; and in this instance in which the word, "for", is used, a comma is necessary. No other part of the sentence needs—or requires—a comma, and there are no commas that are placed unnecessarily.
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As a side note, I would recommend that the first letter of the first word in the sentence: "Abbey", be capitalized, because:
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1) It is the first word at the beginning of the sentence; and:
2) It is someone's name, which is a proper noun.
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I also recommend placing a "period" at the end of the sentence.
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To read:
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<span>Abbey is most interested in learning how to mount her horse, for she already knows several things about dressage.
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Once upon a time, two pupils named Billy and Bob were on a plane. They were flying to New York City. Bob always brought a baseball with him. It was his favorite sport. Billy warned him to be careful with his ball. He didn’t want anyone getting hit. As predicted, Bob threw the baseball and Billy, but was way off target and hit someone and the ball ricocheted and hit a window as well! They both knew they would get in big trouble. Luckily, they brought parachutes with them and flew out the window. No one ever saw them again. The end.
83 goes into 8 10.4 times because 83 <span>÷ 8 = 10.375</span>