Solve the problem.For children aged 5 to 15 years, the number of hours watching cartoons per week can be estimated by the function  where s is the age of the child. Find the domain of the function.

A. { x is a real number}
B. { 2 ? x ? 13}
C. { 5 ? x ? 15}
D. { 1.1 ? x ? 13}


Answer: C

Mathematics

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Find projv u.v = 3i - j + 3k, u = 2i + 10j + 11k

A. i + j + k
B. i - j + k
C. i - j + k
D. i + j + k

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Graph.9x2 + 49y2  = 441

A.

B.

C.

D.

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Plot the complex number.z = 3 + i 

A.
 
B.
 
C.

D.
 

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Solve.23(x - 92) = 46

A. x = 94 B. x = 92 C. x = 46 D. x = 90

Mathematics