Solve the equation by completing the square.a2 - 4a = 5
A. {±
}
B. {-4, -1}
C. {5, -1}
D. {-5, 1}
Answer: C
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Solve the problem using the quadratic formula.For a car traveling at x mph, stopping distance is estimated by the formula 
Find a (maximum) safe speed for a stopping distance of 670 ft. Round your answer to the nearest mph.
A. 75 mph B. 72 mph C. 63 mph D. 67 mph
Find the perimeter of the triangle or rectangle as indicated.Find the perimeter of the rectangle.
A. P = 5.1 ft B. P = 7.884 ft C. P = 11.58 ft D. P = 5.79 ft
Solve the equation.x + 10 + 2x = -20 - 2x - 25
A. 11 B. -11 C. 7 D. -7
Find parametric equations (not unique) for the circle (give an interval for the parameter values) and find a description in terms of x and y.a circle centered at (4, 3) with radius 2, generated counterclockwise
A. x = t - 4, (y - 3)2 + t2 = 4, for 0 < t < 2?; x2 + y2 = 2
B. x = 3 + 2 sin t, y = 4 + 2 cos t, for 
< t < 
; x2 + y2 = 2
C. x = 4 + 2 cos t, y = 3 + 2 sin t, for 0 < t < 2?; x2 + y2 = 2
D. x = 4 + sin t, y = 3 + cos t, for 
< t < 
; x2 + y2 = 2