Question

which graph represents exponential decay?

Explanation:

Exponential decay graphs are curved, decreasing as \(x\) increases, and approach the x-axis without crossing it. The first graph shows a curve that falls as \(x\) increases, matching this behavior. The second graph is linear (not exponential), the third is exponential growth (increasing), and the fourth decreases but starts at negative \(x\) values, not fitting standard decay for positive domains.

Answer:

[A. The top-most graph with a downward-curving red line that decreases as \(x\) increases]