The function is .

(a) hours :

If , then the function is .

Substitute in above function.

.

The fee for parking in the short-term parking garage for hours is .

(b) hours :

If then the function is .

Substitute in above function.

Greatest integer function greatest integer less than or equal to .

.

The fee for parking in the short-term parking garage for hours is . 

(c) hours :

If then the function is .

Substitute in above function.

.

The fee for parking in the short-term parking garage for hours is .

(d) hours and minutes :

minutes hour.

minutes hours.

If then the function is .

Substitute in above function.

. 

The fee for parking in the short-term parking garage for hours and minutes is .

(a) .

(b).

(c).

(d).