Answer
a) Please see the graph.
b) (0,1) is the point
c) No.
d) As $b$ increases, the steeper the graph gets.
Work Step by Step
a) The graph was made using graphing software.
blue line: $y = 2^x$
green line: $y=4^x$
orange line: $y = .25^x$
b) The point was found by graphing all three lines.
c) The lowest value of an exponential function (with a positive value of the base) is almost zero.
d) The graph reaches higher values with lower values of $x$ as $b$ increases.
