The graph of y = f(x) is given. Use the graph to find the function value.
Find f(4).
A. 4
B. 15
C. None of these
D. -1
Answer: B
Mathematics
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Use properties for rational number operations to solve the equation.x - 
= 
A. 
B. 1
C. 3
D. 
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Write an equation of the line.
A. y = 9x B. x = 9 C. y = x + 9 D. y = 9
Mathematics
Solve the problem.A freight train leaves a station traveling at 32 km/h. Two hours later, a passenger train leaves the same station traveling in the same direction at 52 km/h. How long does it takes the passenger train to catch up to the freight train?
A. 3.2 hr B. 2.2 hr C. 4.2 hr D. 5.2 hr
Mathematics
Use the discriminant to determine whether the graph of the equation is an ellipse (or circle), a hyperbola, or a parabola.8x2 - 4xy + 4y2 - 20 = 0
A. Parabola B. Ellipse or circle C. Hyperbola
Mathematics