Evaluate by substituting the given number into the rational expression and simplify:
a. 
b. 
c. 
d. 0
a.
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Find the exact value of the expression.sec (-1215°)
A. 
B. - 
C. -1
D. - 
Sketch the graph of the function. Describe how the graph can be obtained from the graph of a basic logarithmic function.f(x) = ln x - 6
A. Shift y = ln x down 6 units
B. Shift y = ln x right 6 units
C. Shift y = ln x up 6 units
D. Shift y = ln x down 6 units
Provide an appropriate response.Write the expression log3 
as a sum or difference of multiples of logarithms.
A. log35 + 8log3x - 4log3y B. (log35)(8log3x) - 4log3y C. log35 + 8log3x + 4log3y D. log35 - 8log3x - 4log3y
Let f be a function with the given domain and range. Find the domain and range of the indicated function.Domain of f(x): [-1, 0]; Range of f(x): [0, 3] 2f
A. D: [-5, 0]; R: [0, 6]
B. D: 
; R: 
C. D: [-2, 0]; R: [0, 15]
D. D: 
; R: [0, 6]