Question

Which statements are true of the function f(x) = 3(2.5)x? The function is exponential.

The initial value of the function is 2.5.
The function increases by a factor of 2.5 for each unit increase in x.
The domain of the function is all real numbers.
The range of the function is all real numbers greater than 3.

Answer 1

The function is exponential.

The function increases by a factor of 2.5 for each unit increase in x

The domain of the function is all real numbers

Explanation:

The function is exponential.

The function increases by a factor of 2.5 for each unit increase in x

The domain of the function is all real numbers