Which of the following sentences correctly uses words to express numbers? The next conference will be held on April twenty-first.
Each session should take approximately one and a half hours.
The cost for each attendee is twenty-five dollars.
O Fifteen college freshman attended the first seminar.

Each session should take approximately one and a half hours.

Explanation:

The correct sentence that properly uses words to express numbers is option B because the numbers expressed as words "1.5" is correctly written as "one and a half hours".

The other options do not correctly use words to express numbers. Option A needs to be written in numbers format, "21st April or April 21", Option C also needs to be written in number format "$25" and Option D also needs to be written in number format "1st seminar".

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