Question

Which of these statements is true for f(x) = 4 • 2^x?​

Answer 1

1. It is increasing
2. The y ~ int is (0, 4)
3. Domain is
   `(-\infty, \infty)`
4. D is the CORRECT answer

Hope this helps!!!

Answer 2

y intercept is (0,4)

Explanation:

`f(x)=4 \cdot 2^x`

The given exponential function has 2^x , so the function is increasing.

To find out y intercept we plug in 0 for x

`f(x)=4 \cdot 2^0`

2^0 is 1

`f(x)=4 \cdot (1)=4`

So y intercept is (0,4)

Domain is the set of x value for which the function is defined.

Here for all x values we will get the value of y. there is no restriction for x

So domain is all real numbers.