Write the polynomial in descending powers of the variable.20 - 2z2 + 7z - 12z4
A. 10z4 + 2z2 - 7z - 20
B. -12z4 - 2z2 + 7z + 20
C. 20 + 7z - 2z2 - 10z4
D. 20 - 12z4 + 7z - 2z2
Answer: B
Mathematics
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A. 
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A. 127 B. 37 C. 47 D. 123
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Write the English phrase as an algebraic expression. Let the variable x represent the number.Seven times a number, increased by eight
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