Write the expression with positive exponents only. Then simplify, if possible.(-2)-4
A. 16
B. 
C. -16
D. - 
Answer: B
Mathematics
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Provide an appropriate response.Solve the system for x and y, expressing either value in terms of a or b, if necessary. Assume that a ? 0 and b ? 0. 
A. 
B. 
C. 
D. 
Mathematics
Find a formula for the nth term of the sequence.0, 2, 2, 2, 0, 2, 2, 2 (0, 2, 2, 2 repeated)
A. an = 1 + (-1)n(n+1)(n+2)/6 B. an = 1 + (-1)(n+1)(n + 2)/2 C. an = 1 + (-1)n(n-1)/2 D. an = 1 + (-1)n(n+1)/2
Mathematics
Graph the system of inequalities.x2 + y2 ? 36-6x + 4y ? -24
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.|9x + 10| = |4x + 3|
A. 
B. 
C. 
D. 
Mathematics