Which statement below is true of the following exponential graph?

The y-intercept is 40

The value of f(x) doubles for every 4 unit increase in x

The value of f(x) is decreasing for each unit increase in x

The value of f(x) is increasing for each unit decrease in x

1 answer

The statement "The value of f(x) doubles for every 4 unit increase in x" is true of the following exponential graph.