Jackie Joyner-Kersee

(7.) In 1988, Joyner-Kersee's long jump was twenty four foots, three and one-half inches.

SPELLING: ok
CAPITALIZATION ok
PUNCTUATION Hyphens (with divided numbers) Quotation marks (for titles)
GRAMMAR & USAGE Plurals (irregular plurals)

In 1988, Joyner-Kersee's long jump was twenty four foots, three and one-half inches.

(8.) She won a gold medal and she won the heptathlon to.

SPELLING: ok
CAPITALIZATION ok
PUNCTUATION Comma (with coordinating conjunctions)
GRAMMAR & USAGE Commonly confused words (to, two, and too)

She won a gold medal, and she won the heptathlon too.