Graph the equation.x + y = -5
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 786. Find a linear equation which fits this data, and use this equation to predict an average score for persons taking a 41-hour review course. Round your answer to the tenths place.
A. 669.9 B. 679.7 C. 665.7 D. 658.4
Solve the problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 20 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 8 L B. 6.7 L C. 5 L D. 10 L
Find the equation of the parabola determined by the given information.Vertex at the origin, focus at (
, 0)
A. y2 = 24x
B. y = 
x2
C. x2 = 24y
D. x = 
y2
Multiply.(w - 5)2
A. w2 + 25 B. 25w2 - 10w + 25 C. w + 25 D. w2 - 10w + 25