Expand.(2m - 4n)4
A. 16m4 - 128m3n - 384m2n2 - 512mn3 - 256n4
B. 16m4 - 128m3n + 384m2n2 - 512mn3 + 256n4
C. 16m4 - 2048m3n + 2304m2n2 - 512mn3 + 256n4
D. 16m4 - 2048m3n - 2304m2n2 - 512mn3 - 256n4
Answer: B
Mathematics
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Find the unit price.Find which is the better buy (lower cost per ounce) by finding each unit price rounded to three decimal places if necessary. Assume that different sizes of the same brand are being compared.Jelly:$0.90 for 14 ounces $1.17 for 16 ounces
A. $0.90 for 14 ounces B. Both cost the same per ounce. C. $1.17 for 16 ounces
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Find the exact value of the real number y.y = sec-1 
A. 
B. 
C. 
D. 
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Factor by grouping.2y - 8 + xy - 4x
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Mathematics