Select the graph of the function: f(x) = [[x]] - 4.
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: D
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Graph the function.y = 3 cos 3?x
A. 
B. 
C. 
D. 
Find the zero of the linear function.f(x) = 8x + 64
A. -8 B. 0 C. 8 D. 64
Solve the problem.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. By using linear regression, the following equation is obtained: 
where x is entering GPA and y is current GPA. Use this equation to predict current GPA of a student whose entering GPA is 3.8. Entering GPA Current GPA 3.53.63.83.73.63.93.63.63.53.93.93.84.03.73.93.93.53.83.74.0
A. 3.79 B. 3.41 C. 3.59 D. 3.30
Simplify the polynomial by combining like terms: - 7r + 6t - s - 5r + 12s + 4t - t + 5s - r.
a.13r + 16s + 9t b. -13r -16s + 9t c. -13r + 16s + 9t d. -13r -16s -9t