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A problem states that Ursula earns $9 per hour. To write an expression that tells how much money Ursula earns h hours, Joshua wrote (fraction) 9/h. Sarah wrote 9h. Whose expression is correct and why?

Sagot :

$9 per hour 
the answer is 9h because if you tried to find out how much she earns after 10 hours you would do 9*10=90 not the other one
Sarah, because it tells how much money she earns each hour.
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