Simplify. Express in terms of i.

A. -7i 
B. ±7 
C. 7i 
D. i

Answer: C

Mathematics

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Solve the system using substitution.

A.
B. no solution
C.
D.

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Round to the indicated place value.Round to the nearest one: 8274.91

A. 8275 B. 8274.9 C. 8274

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Write the decimal in numbers.One hundred and two tenths

A. 100.2 B. 0.102 C. 10.2 D. 102.0

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Evaluate the expression for x = -2, y = 3, z = -4.

A. -30 B. -14 C. 14 D. 5

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