Solve the problem.John owns a hotdog stand. He has found that his profit is represented by the equation 
, where x is the number of hotdogs. What is the most he can earn?
A. $12
B. $78
C. $21
D. $42
Answer: B
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Solve the problem.Find the area bounded by y = 
, x = 0, y = 0, and x = 2.
A. 
sin-1
B. 
tan-1
C. 
tan-1
D. sin-1
Identify the figure as a line, segment, or ray. Then use the correct symbol to name the figure.
A. ray; 
B. line; 
C. line segment; 
D. line segment; 
Use a graphing calculator to plot the data and find the quadratic function of best fit.A small manufacturing firm collected the following data on advertising expenditures (in thousands of dollars) and total revenue (in thousands of dollars). 
Find the quadratic function of best fit.
A. R(x) = -0.024x2 + 7.13x + 6209 B. R(x) = -0.015x2 + 4.53x + 6123 C. R(x) = -0.091x2 + 5.95x + 6337 D. R(x) = -0.31x2 + 2.63x + 6128
Determine whether the given value is a solution to the given equation.Is 0.07 a solution of -7.9x = -5.53?
A. Yes B. No