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OpenStudy (anonymous):
The equation -5x² + 72x + 378 models the number of students enrolled in a school where x is the number of years since the school first opened in 1990. Which equation can be used to find the year in which 502 students were enrolled? a) -5x² + 72x – 124 = 0 b) -5x² + 72x + 502 = 0 c) -5x² + 72x – 502 = 0 d) -5x² + 72x + 124 = 0
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OpenStudy (ankit042):
-5x² + 72x + 378 =502 solve!
OpenStudy (anonymous):
D.
OpenStudy (ankit042):
Great!
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