Transcript text: Sketch the graph of $f(x)=2^{x+4}$.
Solution
Solution Steps
Step 1: Analyze the function
The function \(f(x) = 2^{x+4}\) is an exponential function. The base is 2, which is greater than 1, so the function will be increasing. The +4 in the exponent represents a horizontal shift to the left by 4 units.
Step 2: Consider the y-intercept
When \(x = 0\), \(f(0) = 2^{0+4} = 2^4 = 16\). The graph should cross the y-axis at 16. Since the graphs only show up to 10 on the y-axis, look for a graph that appears to cross around 16 and is an increasing exponential function shifted left.
Step 3: Consider the x-intercept
Exponential functions of this form do not cross the x-axis. We can check by setting \(0 = 2^{x+4}\), which has no solution.
Step 4: Analyze the given graphs
Option A appears to be an increasing exponential that crosses the y-axis at 16 and has been shifted left. The other options do not meet the above criteria.