Question

Which graph represents exponential decay?

80
형
40
20
-
O
2
x
80
60
LI
1401
20
1 2 3
2 3
80
60
40
20
x
80
60
40
20
2 3

Answer 1

(d) -- see attached

Explanation:

A graph that shows exponential decay is one that tends toward a horizontal asymptote as x gets large.

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A basic (parent) exponential decay curve is concave upward and tends toward zero as x gets large. The fractional change in any interval is the same as for any other interval of equal size. The curve attached decreases by a factor of 2 when x increases by 1.