If the following is a polynomial function, then state its degree and leading coefficient. If it is not, then state this fact.f(x) = -18 - 19x4 - 17x - 8x3 - 13x2
A. Degree: 4; leading coefficient: -18
B. Degree: 4; leading coefficient: -19
C. Degree: -18; leading coefficient: -19
D. Not a polynomial function.
Answer: B
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Solve the problem.Consider the graph of f(x) = 
, 0 ? x ? 1. What symmetry does the graph have? Is f its own inverse?
A. The graph of f has no symmetry. The function f is not its own inverse because there is no symmetry.
B. The graph of f is symmetric with respect to the line y = x. The function f is its own inverse because (f?f)(x) = x.
C. The graph of f is symmetric with respect to the y-axis. The function f is its own inverse because (f?f)(x) = x.
D. The graph of f is symmetric with respect to the y-axis. The function f is not its own inverse because (f?f)(x) = 
.
Solve the problem.A computer is purchased for $4400. Its value each year is about 78% of the value the preceding year. Its value, in dollars, after t years is given by the exponential function V(t) = 4400(0.78)t. Find the value of the computer after 6 years.
A. $772.89 B. $990.88 C. $602.85 D. $20,592.00
Evaluate the function at the indicated value.Find f(-2) when f(x) = 
.
A. 2
B. 
C. - 4
D. - 10
List the numbers in set B that belong to the indicated set.B = 
Whole numbers
A. 12, -10, 0, 
B. 12, 0, 
, 
C. 12, 0
D. 12, -10, 0