20)

The equation is $\"\"$

Graphof the equation $\"\"$

$\"\"$

Oberve the graph,

The exponential equation represents negative side of the x-axis.

The equation is exponential decay.

22)

The graph of $\"\"$

$\"\"$

Compare the given graph, \ \

False.

23)

The function is $\"\"$

Consider the $\"\"$ value rewrite the function is $\"\"$

Graph the function the $\"\"$ value moves the graph up or down.