\

The wind chill function is $\"\"$ ,

\

where $\"\"$ represents the wind speed and $\"\"$ represents the air temperature.

\

Find the wind chill in each case.

\

(a)

\

An air temperature $\"\"$ and a wind speed $\"\"$ .

\

If $\"\"$ then the function is $\"\"$ .

\

Substitute $\"\"$ in $\"\"$ .

\

Wind chill is $\"\"$ .

\

\

(b)

\

An air temperature $\"\"$ and a wind speed $\"\"$ .

\

If $\"\"$ then the function is $\"\"$ .

\

Substitute $\"\"$ and $\"\"$ in above function.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Wind chill is $\"\"$ .

\

(c)

\

An air temperature $\"\"$ and a wind speed $\"\"$ .

\

If $\"\"$ then the function is $\"\"$ .

\

Substitute $\"\"$ and $\"\"$ in above function.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Wind chill is $\"\"$ .

\

\

(d)

\

An air temperature $\"\"$ and a wind speed $\"\"$ .

\

If $\"\"$ then the function is $\"\"$ .

\

Substitute $\"\"$ in above function.

\

$\"\"$

\

Wind chill is $\"\"$ .

\

\

(a) $\"\"$ .

\

(b) $\"\"$ .

\

(c) $\"\"$ .

\

(d) $\"\"$ .