brandyleemom3
05.11.2020 •
Mathematics
4x+7y=60
-4x+7y=-4
choose the correct ordered pair
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Ответ:
B. Real numbers
C. -2≤ t ≤98
Step-by-step explanation:
t is the no. of days.
There can be 2.5 days too,
So domain should be Real numbers
t days after she bought it,
So 2 days before t = -2
So, -2≤ t ≤98