Glen wants to improve his grade in history class after failing an exam. He decides to study an extra 2 hours before his next exam, and his grade improves by 9%. What is the unit rate for this situation?
d) 9
d) 2
d) 1
d) 4.5
+4
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Home » Mathematics » Glen wants to improve his grade in history class after failing an exam. He decides to study an extra 2 hours before his next exam, and his grade improves by 9%. What is the unit rate for this situation? d) 9 d) 2 d) 1 d) 4.5