Express the sum using summation notation.
+ 
+ 
+ ... + 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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On the real number line, label the points with the given coordinates.-5.75, -3, -1, 1.25 
A. 
B. 
C. 
D. 
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Solve the equation.13x = 1
A. {1}
B. {0}
C. {
}
D. ?
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Solve.In a town whose population is 2500, a disease creates an epidemic. The number N of people infected t days after the disease has begun is given by the functionN(t) = 
Find the number infected after 2 days.
A. 458 B. 454 C. 459 D. 456
Mathematics
Find the exact value. If the value of the function is not defined, write undefined.csc 
A. Undefined B. -1 C. 2 D. 0
Mathematics