Solve the quadratic equation by completing the square.x2 + 8x - 3 = 0
A. {-4 ± 
}
B. {-1 ± 
}
C. {4 ± 
}
D. {-4 ± 2
}
Answer: A
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Which subtraction model (take-away, missing addend, comparison, or measurement) corresponds best to the problem?Last year the hatch-back model of a new car cost $18,022. This year's model costs $19,256. How much more does this year's model cost?
A. Measurement B. Missing addend C. Take-away D. Comparison
Graph the linear function and give the domain and range.f(x) = 3x + 5
A. D = (-?, ?), R = (-?, ?)
B. D = (-?, ?), R = (-?, ?)
C. D = (-?, ?), R = (-?, ?)
D. D = (-?, ?), R = (-?, ?)
Find the difference.-12.5 - (-8.4)
A. -4.1 B. -20.9 C. 20.9 D. 4.1
Solve the problem.The surface area of a sphere with radius r is 4? r2. Write a polynomial that gives the surface area of a sphere with radius 
A. 4?(r + 4) B. 4?(r2 + 4) C. 4?(4r2 + 4r + 4) D. 4?(r2 + 4r + 4)