Use elimination to solve each system of equations, if possible. Identify the system as consistent or inconsistent. If the system is consistent, state whether the equations are dependent or independent. 0.5x - 0.1y = -2.7-0.3x - 0.5y = 0.5
A. (-5, 2); consistent and independent
B. (-1.7, 6.5); consistent and independent
C. inconsistent
D. (-5.6, 4.3); consistent and independent
Answer: A
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Solve the problem.Find an equation for the level curve of the function f(x, y) = 
that passes through the point 
.
A. x2 + y2 = 7 B. x2 + y2 = 5 C. x + y = 5 D. x2 + y2 = 25
Solve the problem.A spherical tank of water has a radius of 
, with the center of the tank 
above the ground. How much work will it take to fill the tank by pumping water up from ground level? Assume the water weighs 
Give your answer to the nearest ft ? lb.
A. 28,229,095 ft ? lb B. 11,291,638 ft ? lb C. 7,188,480 ft ? lb D. 22,583,276 ft ? lb
Construct a frequency polygon.
A. Frequency
| Weight in pounds |
B. Frequency
| Weight in pounds |
Round the number to the place indicated.Round to the nearest hundredth: 12.38864
A. 12.40 B. 12.389 C. 12.3886 D. 12.39