Translate the phrase to an algebraic expression. Use x to represent "a number."The sum of -4 and a number
A. -4 + x
B. -4x
C. -4 - x
D. 4 + x
Answer: A
Mathematics
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Use mathematical induction to prove that the statement is true for every positive integer n.5 + 5 ? 
+ 5 ? 
2 + . . . + 5 ? 
n - 1 = 
What will be an ideal response?
Mathematics
Determine the intervals on which the function is increasing, decreasing, and constant.
A. Decreasing on (-?, ?) B. Increasing on (-?, ?) C. Increasing on (0, ?); Decreasing on (-?, 0) D. Increasing on (-?, 0); Decreasing on (0, ?)
Mathematics
Write the quotient in standard form.
A. -3 - 
i
B. - 
+ 3i
C. 
- 3i
D. 3 + 
i
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics