Simplify by combining like terms.-2a - 7a

A. 5a
B. 9a
C. -9a
D. -5a


Answer: C

Mathematics

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Give the domain and range of the relation.{(2, 7), (-1, -9), (-6, -4), (6, 0)}

A. domain: {-6, -1, 2, 6}; range: {-9, -4, 0, 7} B. domain: {2, 6, 7}; range: {-9, -6, -4, -1} C. domain: {-9, -6, -4, -1}; range: {2, 6, 7} D. domain: {-9, -4, 0, 7}; range: {-6, -1, 2, 6}

Mathematics

Use a calculator to evaluate.7342

A. 538,756 B. 1,468 C. 736 D. 734

Mathematics

Solve the problem.The profit made when t units are sold, t > 0, is given by  Determine the number of units to be sold in order for P > 0 (a profit is made).

A. 20 < t < 10 B. t = 30 C. t = 20 or t = 10 D. t > 20 or t < 10

Mathematics

Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 - 5x - 8 = 0

A.
B.
C.
D.

Mathematics