What is the y -intercept of the graph of y is equal to 2 point 5 to the x th power ?

The y-intercept is where the graph crosses the y-axis, which happens when x = 0. Substituting gives y = 2.5⁰ = 1, since any nonzero number raised to the zero power equals 1. So the y-intercept is 1, choice D.

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