Answer:
y intercept is (0,4)
Step-by-step explanation:
[tex]f(x)=4 \cdot 2^x[/tex]
The given exponential function has 2^x , so the function is increasing.
To find out y intercept we plug in 0 for x
[tex]f(x)=4 \cdot 2^0[/tex]
2^0 is 1
[tex]f(x)=4 \cdot (1)=4[/tex]
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.
