26)

Observe the graph;

Graph is shown domain is all real numbers except irrationl numbers and range is infinity positive to negative.

The function is $\"\"$

27)

Observe the graph;

Graph isshown sinusoidal wave form domain is all real numbersand range is $\"\"$

The function is $\"\"$

28)

Observe the graph;

Graph is shown domain is all real numbers except irrationl numbers and range is $\"\"$

The function is $\"\"$

29)

The function is $\"\"$

Graph the function and observe the wave form.

$\"\"$

The range of the function is $\"\"$

25)

Consider right angle triangle sides are $\"\"$

The hypotenuse of the deck will be $\"\"$ long.

Hypotenuse, $\"\"$ The other two sides of the deck will be equal in length.

Since, $\"\"$

Find what is the length of a side of the deck.

Right angle property is $\"\"$

Substitute $\"\"$

$\"\"$

The length of a side of the deck is $\"\"$ feet.