Can some one ? i don't really understand this

What is the range of this function? all real numbers such that y ≤ 40 all real numbers such that y ≥ 0 all real numbers such that 0 ≤ y ≤ 40 all real numbers such that 37.75 ≤ y ≤ 40

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?