Solve the problem.Jim has gotten scores of 63 and 67 on his first two tests. What score must he get on his third test to keep an average of 70 or greater?
A. At least 65
B. At least 79
C. At least 80
D. At least 66.7
Answer: C
Mathematics
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? 
+ 
? 
A. 6
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C. 36
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Find the domain of the composite function f?g.f(x) = 
, g(x) = 
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