If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."f(x) = 6x3 - 7
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
+ 7
D. Not one-to-one
Answer: B
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Write the best-fit linear model for the data.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. Find a linear function that approximates a student's current GPA as a function of his or her entering GPA.Entering GPACurrent GPA 
A. y = 2.51 + 0.329x B. y = 5.81 + 0.497x C. y = 4.91 + 0.0212x D. y = 3.67 + 0.0313x
Solve. Simplify the answer.Ian walked 
mile to his biology class, 
mile to his art class, 
mile to his calculus class, and then back to his dormitory. If he walked 1 mile altogether, how far did he walk from his calculus class to his dormitory?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Find the zeros of the quadratic function by completing the square. List the x-intercepts of the graph of the function.f(x) = x2 - 
x - 
A. x = 
, x = 
B. x = - 
, x = - 
C. x = - 
, x = 
D. x = 
, x = - 
List the intercepts of the graph.Tell whether the graph is symmetric with respect to the x-axis, y-axis, origin, or none of these. 
A. intercept: (0, 3) symmetric with respect to y-axis B. intercept: (3, 0) symmetric with respect to y-axis C. intercept: (0, 3) symmetric with respect to origin D. intercept: (3, 0) symmetric with respect to x-axis