The domain is all real numbers.
Answer: I'm confused. What are you asking here?
Step-by-step explanation:
The lower bound is the smallest value that would round up to the estimated value. A quick way to calculate upper and lower bands is to halve the degree of accuracy specified, then add this to the rounded value for the upper bound and subtract it from the rounded value for the lower bound.
The answer is negative 4...4 to 0 has the same distance as -4 to O
