Solve.x(x - 6) = 27
A. -3, -9
B. -3, 9
C. 3, -9
D. 3, 9
Answer: B
Mathematics
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Use the substitution method to solve the system. x + y = 33x + 3y = 9
A. Infinitely many solutions B. (2, 1) C. (0, 0) D. No solution
Mathematics
Solve.Suppose that the sales of a particular brand of appliance satisfy the relationship 
where S(x) represents the number of sales in year x, with x = 0 corresponding to 1990. For what years will sales be between 1960 and 2320?
A. Between 1993 and 1996 B. Between 1992 and 1995 C. Between 4 and 7 D. Between 1993 and 1995
Mathematics
Find the common difference for the arithmetic sequence.8, 13, 18, 23, . . .
A. -5 B. -15 C. 5 D. 15
Mathematics
Rewrite the expression with a rational exponent.6y
A. 6yx3/7
B. 
C. (6yx)3/7
D. 6yx7/3
Mathematics