Find the natural domain of the function.f(x, y) = 
A. All points in the x-y plane
B. All points in the x-y plane except x = 0
C. All points in the x-y plane except (0, 0)
D. All points in the x-y plane except y = 0
Answer: D
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Approximate the coordinates of each turning point by graphing f(x) in the standard viewing rectangle. Round to the nearest hundredth, if necessary.f(x) = 0.1x5 + 0.0075x4 - 0.3095x3 - 0.547x2 + 0.387x + 7
A. (0, 7) and (2, 6.43) B. (-0.43, 6.76) and (1.96, 6.33) C. (0.29, 7.06) and (1.67, 6.04) D. (-2.36, 0)
Evaluate the given binomial coefficient.
A. 42 B. 3 C. 60,480 D. 84
Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.5x = 393
A. x = log 393
B. x = log5393
C. x = 
D. x = log 
Sixty liters of a 43% acid solution is obtained by mixing a 28% solution with a 42% solution.Use a graphing utility to graph the two given equations. Let x and y represent the amounts of the 28 % solution and 42% solution. As the amount of the 28% solution increases, how does the amount of the 42% solution change?
?
?
?
A. ?
?
Increases
B. ?
?
Decreases
C. ?
?
Decreases
D. ?
?
Decreases
E. ?
Increases