Determine an equation that models the data best.
A. y = -3x + 6
B. y = x - 6
C. y = -3x - 6
D. y = x + 6
Answer: A
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Solve the linear inequality. Graph the solution set on a number line, and express the solution using interval notation.-4x + 3 ? -5x - 2
A. [1, ?)
B. [-5, ?)
C. (-?, -5]
D. (-?, -5)
Simplify each side of the equation and then solve. Check your solution.6(x ? 2) = 
A. x = 12 B. x = 2 C. x = 4 D. x = 1
Use a graphing calculator to solve the system by finding A-1 and A-1B. (Round to the nearest integer if necessary.)
A. {(3, 7, 8)} B. {(2, -9, -8)} C. {(9, 8, 9)} D. {(2, 9, 8)}
Solve the problem.The percent of concentration of a drug in the bloodstream x hours after the drug is administered is given by K(t) = 
. On what time interval is the concentration of the drug increasing?
A. (1, 8) B. (0, 8) C. (0, 9) D. (-8, 8)