Solve using the principle of zero products.(y - 7)(2y + 21) = 0
A. -7, 
B. - 
, 7
C. - 
, 7
D. -7, 
Answer: B
Mathematics
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Write an equivalent sentence for the statement.If you are mistaken then you are wrong, and if you are wrong then you are mistaken. (Hint: Use the fact that 
is equivalent to 
A. You are mistaken or you are wrong. B. You are mistaken if you are wrong. C. You are mistaken if and only if you are wrong. D. You are mistaken and wrong.
Mathematics
Use a calculator to evaluate the expression. 
A. 6,957,522 B. 83,490,264 C. 417,451,320 D. 3,478,761
Mathematics
Find ?f/?y for f (x, y) = 
What will be an ideal response?
Mathematics
Simplify.-|23|
A. 1 B. 23 C. -1 D. -23
Mathematics