Solve the system of linear equations using matrices.
A. (4, 9, -2)
B. (-2, 9, 4)
C. (2, 2, 9)
D. (2, 9, 2)
Answer: D
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Solve the inequality. Graph your solution on a number line, and write your solution in interval notation. 3x - 3 ? -12 or 3x - 3 ? 0
A. [-3, ?)
B. (-?, -3] ? [1, ?)
C. (-?, 1]
D. [-3, 1]
Find the present value of the future amount. Assume 365 days in a year. Round to the nearest cent.$10,390 for 119 days; money earns 5.8%
A. $10,197.18 B. $10,198.77 C. $192.82 D. $9820.42
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(5, -2)} B. no solution; ? C. {(6, -3)} D. {(-6, -2)}
Find the unit rate.1827 cars in 870 households (reduce to a one household comparison)
A. 957 cars/household B. 2697 cars/household C. 0.476 car/household D. 2.1 cars/household