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Post Test: Rational Expressions and Equations
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Select the correct answer.
It takes Greg and Nikki a total of 40 minutes to paint a room they work together. If Greg works alone, he takes 18 minutes longer to paint he
room than Nikki takes if she works alone.
When x represents the number of minutes it takes Nikki to paint the room working alone, the situation is represented by this equation:
40
Which value is a solution of the rational equation that must be discarded because of the context?
ОА.
x=0
ОВ.
x= -10
Ос.
x = -18
OD
x= -72
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