Answer the question.True or False? The x-coordinate is positive in quadrants I and IV.
A. False
B. True
Answer: B
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Find the expected value.Bob and Fred play the following game. Bob rolls a single die. If an even number results, Bob must pay Fred the number of dollars indicated by the number rolled. On the other hand, if an odd number is rolled, Fred must pay Bob the number of dollars indicated by the number rolled. Find Bob's expected winnings.
A. -$0.25 B. $0 C. -$0.50 D. -$0.40
Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.x + 3y - 2z - w = 274x + y + z + 2w = 14-3x - y - 3z - 2w = -1 x - y - 3z -2w = 11
A. {(27, 14, -1, 11)} B. {(3, 5, -5, 1)} C. {(2, 7, -9, 3)} D. {(3 + w, 5 - 2w, -5 + 2w, w)}
Use the calculator graph to find the solution set of the given equation or inequality.-
< x 
A. (-4, 0] B. [-20, ?) C. (-4, ?) D. [-20, -4)
Solve the problem.The regular price of a ring is $495.50. During a May jewelry sale, the ring was discounted 30%. What was the sale price of the ring?
A. $149.65 B. $148.65 C. $346.85 D. $347.85