Add or subtract as indicated. Express the answer as a single polynomial in standard form.(8x2 + 5) - (-x3 - 10x2 + 4)
A. x3 - 2x2 + 9
B. 9x3 - 10x2 + 1
C. x3 + 18x2 + 1
D. 9x3 - 5x2 - 4
Answer: C
Mathematics
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Solve using the substitution method. If the system has an infinite number of solutions, use set-builder notation to write the solution set. If the system has no solution, state this. x + 7y = -23x + y = 34
A. (7, 12) B. (3, 7) C. (12, -2) D. (-2, 3)
Mathematics
Give the coordinates of the points shown on the graph. 
A. A = (6, 6), B = (5, 6) B. A = (6, 5), B = (-7, 6) C. A = (5, 28), B = (6, -7) D. A = (6, 5), B = (6, -7)
Mathematics
Find the unknown value.55 is 125% of what number?
A. 15,625 B. 44 C. 156.25 D. 440
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics