Question

Which graph is an exponential growth model?
Responses

A
A

B
B

C
C
Three graphs showing time on the x axis and number of individuals on the y axis. The x axis is an arrow pointing to the right. The y axis is an arrow pointing up. The graphs are labeled A, B, C. Graph A. A line starts at the origin in the lower left corner of the graph and rises sharply as time increases until it is almost pointing straight up. Graph B. A straight line halfway up the y axis parallel to the x axis. Graph C. A line starts at the origin of the x and y axis and rises sharply until it levels off halfway up the y axis and becomes a straight line parallel to the x axis. A dotted line perpendicular to the x axis marks the point where the graph levels off.

Answer 1

The graph that represents an exponential growth model is **Graph A**. In exponential growth, the value increases rapidly, typically starting slowly and then accelerating upward, resembling a J-shaped curve.

- **Graph A** starts at the origin and rises sharply, indicating rapid growth over time.
- **Graph B** represents a constant value, which does not change over time (linear growth).
- **Graph C** starts with rapid growth but then levels off, indicating logistic growth rather than exponential growth.

Therefore, the correct answer is **Graph A**.