Question

Which of the following functions have a domain of (-∞,∞) and a range of (5,∞)?Check all that apply. A.f(x)=0.25^x -5 B. f(x)=0.25^x +5 C.f(x)=3^x +5 D. f(x)=3^x -5

Answer 1

certainly (A) and (D) are not correct choices because when x = 0 (belonging to the domain), the value of either expression (A) or (D) is -4 (not in the range)

Answer 2

right