Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.f(x) = 
4(x - 5)3
A. above the x-axis: (5, ?)
below the x-axis: 
, 
B. above the x-axis: 
, (5, ?)
below the x-axis: 
C. above the x-axis: 
, 
below the x-axis: (5, ?)
D. above the x-axis: 
below the x-axis: 
, (5, ?)
Answer: A
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
B. Domain: all points in the xy-plane except y = 0; range: real numbers z ? 0 ; level curves: parabolas 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
D. Domain: all points in the xy-plane except y = 0; range: all real numbers; level curves: parabolas 
Identify a, b, c, with a > 0, for the quadratic equation.x(x - 3) = 2
A. a = 1, b = 2, c = -3 B. a = 1, b = -3, c = 2 C. a = 1, b = -3, c = -2 D. Not quadratic
Write the expression using exponents.x ? x ? x ? x ? x ? x ? x
A. 7x B. 7 C. x7 D. 7x
Referring to triangle ABC, find the area of the triangle.
?
?
Round to three significant digits.
?
A. 37,200 inches2 B. 36,600 inches2 C. 37,100 inches2 D. 36,700 inches2 E. 37,000 inches2