At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Ask your questions and receive detailed answers from professionals with extensive experience in various fields. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.

What is the [tex]$y$[/tex]-intercept of [tex]$f(x)=3^{x+2}$[/tex]?

A. [tex]$(9,0)$[/tex]
B. [tex]$(0,9)$[/tex]
C. [tex]$(0,-9)$[/tex]
D. [tex]$(9,-9)$[/tex]


Sagot :

To find the [tex]\( y \)[/tex]-intercept of the function [tex]\( f(x) = 3^{x+2} \)[/tex], we need to determine the value of [tex]\( f(x) \)[/tex] when [tex]\( x = 0 \)[/tex].

1. Substitute [tex]\( x = 0 \)[/tex] into the function:
[tex]\[ f(0) = 3^{0+2} \][/tex]

2. Simplify the exponent:
[tex]\[ 0 + 2 = 2 \][/tex]

3. Evaluate the power of 3:
[tex]\[ 3^2 = 9 \][/tex]

Thus, the [tex]\( y \)[/tex]-intercept of the function [tex]\( f(x) = 3^{x+2} \)[/tex] is the point where [tex]\( x = 0 \)[/tex] and [tex]\( y = 9 \)[/tex]. Therefore, the [tex]\( y \)[/tex]-intercept is the point [tex]\((0, 9)\)[/tex].

So, the correct answer is:
B. [tex]\((0, 9)\)[/tex]