Answer:
(a) Growth, (0, 1/2)
Explanation:
You want to know if the function f(x) = 1/2·3^x represents growth or decay, and its y-intercept.
Exponential function
The exponential function ...
y = a·b^x
has a y-intercept of (0, a). The value 'b' is called the "growth factor". When it is greater than 1, the function is a growth function. When 'b' is less than 1, the function is a decay function.
Application
Here, we have ...
f(x) = 1/2·3^x
That means a = 1/2, so the y-intercept is (0, 1/2).
The value of 'b' is 3, which is greater than 1. The function is a growth function.
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