Answer:
C- The range is the set of all real numbers greater than -4
Step-by-step explanation:
You want an appropriate description of a decreasing exponential function with a horizontal asymptote of y = -4.
The range of the function is the vertical extent of its graph. This exponential function extends from y = -4 to y → +∞.
The range is the set of real numbers greater than -4.
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Additional comment
The domain is the horizontal extent of the graph. The arrows on the ends of the curve show it extends to infinity in both directions.
The value y=-4 is not actually part of the range. The function comes arbitrarily close to that value, but is never actually that value.