Solve the inequality. Describe the solution set as an inequality, in interval notation, and in a graph.12 ? 
x + 3 < 30
A. 2 < x ? 3; (2, 3]
B. 2 ? x < 3; [2, 3)
C. 2 < x ? 6; (2, 6]
D. 2 ? x < 6; [2, 6)
Answer: D
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Solve the problem. Round dollar amounts to the nearest cent. Use 360 days.Polson Associates bought a new computer system. To pay for the system, they borrowed 
from the bank at 
interest for 130 days. Find the simple interest.
A. $1315.31 B. $3670.63 C. $1307.35 D. $1325.50
Solve the problem.A 26 ft long ladder rests against a wall. The height at which the ladder rests against the wall is x. The distance from the base of the wall to the bottom of the ladder is 
x - 2. Find the height, x, at which the ladder touches the wall.
A. 25 ft B. 24 ft C. 20 ft D. 28 ft
Solve the system using the inverse matrix method.
A. x = -2, y = -3; (-2, -3) B. x = 2, y = 3; (2, 3) C. x = -3, y = -2; (-3, -2) D. x = 3, y = 2; (3, 2)
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one