What are the domain and range of f(x) = 2(3x)?
domain: (negative infinity, infinity); range: (0, infinity)
domain: (negative infinity, infinity); range: (2, infinity)
domain: (0, infinity); range: (negative infinity, infinity)
domain: (2, infinity); range: (negative infinity, infinity)

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Which of the following tables represents exponential functions?

Based on the diagram, match the trigonometric ratios with the corresponding ratios of the sides of the triangle. tiles : cosb sinb tanb sincposs matches: c/b b/a b/c c/a