Evaluate the expression.
3
A. 
B. 
C. - 
D. - 
Answer: C
Mathematics
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Identify the number as prime, composite, or neither.126
A. Composite B. Neither C. Prime
Mathematics
Add or subtract as indicated.(-7 - 2x7 + 8x9 - 5x8) + (-9x8 - 6x7 - 2 + 7x9)
A. -7x48 - 9 B. -16x9 - 16x8 + 6x7 + 2 C. 15x18 - 14x16 - 8x14 - 9 D. 15x9 - 14x8 - 8x7 - 9
Mathematics
Express the sum using summation notation. Use a lower limit of summation, not necessarily 1, and k for the index of summation.(a + 1) + (a + b) + (a + b2) + . . . + (a + bn)
A. 
B. 
C. 
D. 
Mathematics
Factor out the negative GCF from the polynomial. If the GCF is 1, factor out -1.-2m2 - 5
A. -1(2m2 + 5) B. -1(-2m2 + 5) C. -1(-2m2 - 5) D. -1(2m2 - 5)
Mathematics