Express the sum in sigma notation. +  +  + 

A.
B.
C.
D.


Answer: C

Mathematics

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Find a formula for the inverse of the function described below.An organization determines that the cost per person of chartering a bus is given by the formula where x is the number of people in the group and C(x) is in dollars.

A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 

Mathematics

Multiply.(3x3 + 7)(3x3 - 7)

A. 9x2 + 42x - 49  B. 9x6 - 42x - 49  C. 9x6 - 49  D. 9x3 - 49 

Mathematics

Solve the equation. = 4

A. ? B. {6, -6} C. {5, -5} D. {5}

Mathematics

Solve the problem.A baking pan measures 9 inches long, 5 inches wide, and 2 inches deep. What is the volume of the pan?

A. 90 in.3  B. 16 in.3  C. 45 in.3  D. 28 in.3 

Mathematics