Use summation notation to write the sum.
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A. 
B. 
C. 
D. 
E. 
Answer: A
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The given point is on the graph of y = f(x). Find a point on the graph of y = g(x).g(x) = f(x - 1); (7, 18)
A. (7, 19) B. (8, 18) C. (7, 17) D. (6, 18)
Determine if the following is an identity or contradiction.2(x + 3) - 4 = 2x + 10
A. Contradiction B. Identity
Find the weighted average.A student earned grades of 80, 85, 78, and 79 on her four regular tests. She earned a grade of 79 on the final exam and 86 on her class projects. Her combined homework grade was 85. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? Round to one decimal place.
A. 82.1 B. 80.2 C. 81.5 D. 81.7
The function Y2 is defined as Y1 + k for some real number k. Based upon the given information about Y1 and Y2, find k. 
A. 4 B. -4 C. 5 D. -5