Step-by-step explanation:
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The equation of the temperature at midnight is written as 3y + 5 = -7
The temperature at the midnight is calculated to be -4 degrees
The equation for the temperature at midnight is following the information given in the problem tripled and increased by 5
Assuming the temperature at midnight is y. For the temperature to triple we have
3y
For the temperature to rise 5 degrees will result to
3y + 5 = -7
solving for y
3y + 5 = -7
3y = -7 - 5
3y = -12
y = -4
At midnight the temperature was -4 degrees
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B. 1
C. –9
D. –17
sin (9π/4)tan(7π/3)