Simplify by combining like terms.2a + 3 - 9ab + 3ab - 5a
A. -3a - 6ab + 3
B. -3a + 6ab + 3
C. -3a - 12ab + 3
D. 3a - 6ab + 3
Answer: A
Mathematics
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Solve the problem.In how many ways can 2 letters be chosen from the set 
if order is important and no repeats are allowed?
A. 15 B. 30 C. 12 D. 36
Mathematics
Write the compound inequality as an absolute value inequality. Do not simplify.?x < -9 or ?x > 9
A. 
< -9 or 
> 9
B. 
> 9
C. ?x > 
D. 
< 9
Mathematics
Find the prime factorization of the composite number.126
A. 22 ? 32 ? 7 B. 14 ? 32 C. 2 ? 32 ? 7 D. 2 ? 3 ? 7
Mathematics
Find the solution to the system by addition (elimination) method.5x + 7y = 295x + 2y = 44
A. (-3, 10) B. (-10, 7) C. (10, -3) D. (-10, 5)
Mathematics