Question

Hello someone please help !! Will mark brainliest

Answer 1

Answer:

  a) domain: (0, ∞)

  b) range: (-∞, ∞)

  c) increasing everywhere

  d) concave downward

Step-by-step explanation:

a) Your knowledge of the log function tells you it is defined for positive arguments. 9x > 0 means x > 0. The domain is all positive real numbers.

__

b) Your knowledge of the log function tells you it has output values ranging from -∞ to +∞. The range is all real numbers.

__

c) The function is monotonically increasing.

__

d) Since the output does not increase as fast as the input (the first derivative is decreasing), the function is concave downward.