Investigate these equations for
exponential growth and decay.
(You may want to use your
graphing calculator for checking.)
1. 
Given
,
evaluate y when x = 3. 
Choose:



2. 
Given
,
evaluate y when x = 2.

Choose:



3. 
Would
the graph of
show exponential growth or exponential decay?

Choose:



4. 
Would
the graph of
show exponential growth or exponential decay?

Choose:



5. 
The equation
will be an exponential function
when a equals ______. 
Choose:



6. 
Which ordered pair
represents the yintercept for the function
? 
Choose:



7. 
The
graph of
lies in which Quadrants? 
Choose:



8. 
The graph
of
contains
which of these points? 
Choose:



9. 
Which
graph below depicts
?

Choose:



10. 
A
piece of paper is folded in half so that there are two
thicknesses (or layers) of paper. These new layers
are folded in half again to form 4 layers. If this
folding continues, which equation will best
represent the number of layers of paper (y), in terms
of the number of folds (x), where x is a whole number?

Choose:



11. 
An
important characteristic of exponential decay is the
time required for the decaying quantity to fall to one
half of its initial value. This time is called the
halflife. A radioactive substance decays
exponentially with a halflife of 500 years. After
1,500 years, what percent of the radioactive material
remains? 
Choose:



