Decide whether or not the ordered pair is a solution to the equation.3x + 5y = 19; (3, 2)
A. Yes
B. No
Answer: A
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Give an appropriate answer.Given the function f(x, y) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures 
< ?.f(x, y) = 
; ? = 0.06
What will be an ideal response?
Solve the problem.A building has an entry with the shape of a parabolic arch 78 ft high and 40 ft wide at the base. Find an equation for the parabola if the vertex is put at the origin of the coordinate system.A = 78 ftB = 40 ft
A. x2 = -5.1y B. y2 = -5.1x C. y2 = -20.5x D. x2 = -20.5y
Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Complete the square and write the equation in standard form. Then give the center and radius of the circle.x2 + y2 + 6x + 8y + 25 = 16
A. (x + 4)2 + (y + 3)2 = 16 (-4, -3), r = 4 B. (x + 3)2 + (y + 4)2 = 16 (3, 4), r = 16 C. (x + 4)2 + (y + 3)2 = 16 (4, 3), r = 16 D. (x + 3)2 + (y + 4)2 = 16 (-3, -4), r = 4