Answer the question.Fred has taken four exams so far in his Chemistry course. His scores are 89, 71, 76, and 92. What is the average of these scores?
A. 82
B. 78
C. 164
D. 85
Answer: A
Mathematics
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?The circumference of the Earth is approximately 24,884.5 miles, using 3.14 for ?. What is the diameter of the Earth? ?
A.
?7,925miles
B.
?3,962.5miles
C.
?
miles
D.
?
miles
E.
?Cannot be determined.
Mathematics
Graph the linear inequality.x > 7 
A. 
B. 
C. 
D. 
Mathematics
Given f(x) and g(x), find the composition.f(x) = 
; g(x) = 2x - 1Find (f ? g)(-13).
A. 3 B. -3 C. 2 D. Undefined
Mathematics
Find the exact value of the expression.
A. -2
B. - 
C. -
D. - 
Mathematics