Answer:
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Step-by-step explanation:
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Answer:
C. The temperature started at 78F then decreased by 6F then decreased again by 5F
Step-by-step explanation:
trust
for 
when a=1, then the value of c that will make the quadratic a perfect square (allows you to complete the square) is 
given x^2+x
b=1
so 
answer is C