On the graph of an exponential function representing growth, what happens to the slope of the graph? the slope

a.) increases.
b.) decreases.
c.) stays the same.
d.) there is no slope.

In an exponential graph, the slope of the graph 
increases. This can be explained by seeing the bacterial 
growth as an example. The lag phase has an almost zero 
slope which then increases to the highest value of slope 
during the exponential phase.