Solve the system by the elimination method. x - 5y = 20-7x - 4y = 16
A. {(1, -5)}
B. {(0, -4)}
C. ?
D. {(4, 0)}
Answer: B
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Let A = {1, 3, 5, 7}B = {5, 6, 7, 8}C = {5, 8}D = {2, 5, 8}U = {1, 2, 3, 4, 5, 6, 7, 8}.Determine whether the statement is true or false.C ? D
A. False; C is not equal to D. B. True C. False; C is equal to D. D. False; D is a subset of C.
Evaluate the exponential expression.(-1)5
A. 5
B. 
C. 6
D. -1
Find the solution set for each inequality. Graph the solution set on a number line and write it in interval notation.|x - 2| + 4 ? 11
A. [9, ?)
B. [-5, 9]
C. (-?, -5] ? [9, ?)
D. (-5, 9)
Solve the problem.A pick-up truck is fitted with new tires which have a diameter of 43 inches. How fast will the pick-up truck be moving when the wheels are rotating at 345 revolutions per minute? Express the answer in miles per hour rounded to the nearest whole number.
A. 44 mph B. 22 mph C. 7 mph D. 37 mph