Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 7, y = - 
; 
B. inconsistent
C. x = 
, y = - 
; 
D. x = 1, y = - 
; 
Answer: C
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Perform the indicated operation.Express 24 × 4 as a power of 2.
A. 28 B. 27 C. 26 D. 25
Solve.The outside of a water storage tank is in the shape of a sphere. If the radius is 14 feet, approximate the volume of the tank in cubic feet. (Use ? = 3.14 as the approximate value.)
A. 11,488.21 ft3 B. 820.59 ft3 C. 8616.16 ft3 D. 615.44 ft3
Provide an appropriate response.True or false? 
= 4
A. True B. False
Solve the problem.Data regarding the amount spent by a government department is represented in the following graph. Find the slope of the line by using any two of the points shown on the line. Is the slope equal to the yearly change in amount spent? 
A. Slope: $0.72 billion; yes B. Slope: $0.38 billion; yes C. Slope: $0.28 billion; no D. Slope: $0.18 billion; no