What is the range of the function of y=4e^x

What does the graph of eˣ look like? It has an asymptote at y = 0, passes through (0, 1) and goes to ∞.

y = 4eˣ has a vertical stretch by a factor of 4 compared to the parent graph so the range is the same as it's parent graph.

Range: y > 0 Interval Notation: (0, ∞)