Perform the indicated operations. Write the answer using only positive exponents. Assume that all variables represent positive real numbers.
A. ( m + 2)7/4
B. 
C. -( m + 2)7/4
D. 
Answer: B
Mathematics
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The post office recorded the weights of packages sent on a particular day and used the results to construct a histogram. Use the histogram to solve the problem. 
0-910-1920-2930-39Weight of Package (pounds)Find the number of packages 19 pounds and under.
A. 6 packages B. 5 packages C. 11 packages D. 2 packages
Mathematics
Determine whether the following is a difference of squares.-81x2 + 81y2
A. No B. Yes
Mathematics
Simplify the expression.
A. 2 B. -2 C. -4 D. 4
Mathematics
Write out the first five terms of the sequence.{sn} = {n2 - n}
A. s1= 0, s2= 2, s3= 6, s4= 12, s5= 20 B. s1= 0, s2= 3, s3= 8, s4= 15, s5= 24 C. s1= 2, s2= 6, s3= 12, s4= 20, s5= 30 D. s1= 1, s2= 4, s3= 9, s4= 16, s5= 25
Mathematics