Find the domain and the vertical asymptote of the function.f(x) = ln x - 4
A. Domain: (0, ?); vertical asymptote: x = 0
B. Domain: (-?, ?); vertical asymptote: none
C. Domain: [0, ?); vertical asymptote: x = 0
D. Domain: (- 4, ?); vertical asymptote: x = - 4
Answer: A
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A. Valid B. Invalid
Solve the problem.The world population of a certain species is evaluated at 2.3 × 106. By some projections, this population will be 6 times more important in 30 years. Express the population at that time in scientific notation.
A. 138 × 106 B. 13.8 × 107 C. 1.38 × 109 D. 1.38 × 107
Decide if the number is rational or irrational.
A. Irrational B. Rational
Sketch the graph of the function. Give the coordinates of the vertex.f(x) = x2 - 5
A. vertex (-5, 0)
B. vertex (5, 0)
C. vertex (0, 5)
D. vertex (0, -5)