Rewrite the quadratic function in standard form by completing the square.f(x) = x2 + 5x + 2
A. f(x) = 
2 - 
B. f(x) = (x - 5)2 + 23
C. f(x) = 
2 + 
D. f(x) = (x + 5)2 - 23
Answer: A
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Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
, - 5 ? x ? 5, about the x-axis (dimensions are in feet). If a cubic foot holds 7.481 gallons and the helicopter gets 3 miles to the gallon, how many additional miles will the helicopter be able to fly once the tank is installed (to the nearest mile)?
A. 125 B. 94 C. 188 D. 376
Write fraction as decimal number. Use bar notation for repeating decimals.
A. 0.27
B. 0.2
C. 0.
D. 0.
Subtract by borrowing as necessary.4166 - 369
A. 3797 B. 203 C. 3665 D. 3785
Use Cramer's rule to solve the system of linear equations. 7x - 7y = -7 2x + 4y = 4
A. (0, 1) B. (-1, 2) C. No solution D. (0, 2)