For the x-values 1, 2, 3, and so on, the yvalues of a function form a geometric sequence that decreases in value. What type of function is it?

  exponential function

Step-by-step explanation:

A geometric sequence is a representation of an exponential function.

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There are a couple of ways an exponential function can decrease in value. It can be a decaying function, or it can be a growth function that is reflected across the x-axis.