Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(3 + 2i)(9 + 3i)
A. 6i2 + 27i + 27
B. 21 - 27i
C. 21 + 27i
D. 33 + 9i
Answer: C
Mathematics
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× 
A. 
B. 
C. 
D. 
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Using the variable x, write the interval as an inequality.
A. x ? 
B. x > 
C. 7 ? x ? 2
D. x < 
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Tell whether the statement is true or false.Some rational numbers are irrational.
A. True B. False
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Add. Do not use a number line except as a check.7
+ 
A. 7
B. 7
C. 7
D. -7
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