Question

Which could be the entire interval over which the function,

f(x), is positive?
(-♾, 1)
(-2, 1)
(-♾,0)
(1, 4)

Answer 1

B -2,1

Explanation:

Answer 2

(-2,1)

Explanation:

The bracket is an opened interval

zero is neutral either positive or Negative

so the range of values in (-2,1) is -1,0 with corresponding values 2 each

hence, they're positive