Provide an appropriate response.Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation. 
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the LCD for the rational expression.
, 
A. (x + 5)(x - 5) B. (x + 5)2 C. (x + 5)(x - 5)2 D. (x - 5)2
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Use a calculator to evaluate the expression. Round the answer to three decimal places.(-0.55)-2
A. 0.303 B. -3.306 C. 3.306 D. -0.302
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
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Solve the formula for the given letter.
A. 
B. 
C. 
D. 
E. 
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