The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
At what time was the temperature 77°?
A. 11 a.m. and 12 p.m.
B. 11 a.m. and 12 p.m. and 3 p.m.
C. 12 p.m. and 3 p.m.
D. 2 p.m.
Answer: B
Mathematics
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, 0 ? ? ? 
A. 
?
B. 
(
- ln(
- 1))
C. 
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(
+ ln(
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÷ 5
A. 1
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C. 1
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A. ? B. {(x, y)| x + y = 2} C. {(0, 0)} D. {(6, -4)}
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