Translate into an equation, then solve.A weatherman reports that since 6:00 am this morning the temperature has dropped by 
to the current temperature of 
What was the temperature at 6:00 am ?
A. x - 21 = -10; x = -11°F
B. x + 21 = -10; x = -11°F
C. x - 21 = -10; x = 11°F
D. x + 21 = -10; x = 11°F
Answer: C
Mathematics
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