Set up an equation to calculate the following (create your own variable names):

a. The area of a room.

b. The wall area of a room including windows and doors.

c. The wall area of a room not including two windows and a door.

d. The number of miles given a number of feet. (Use 5,280 feet per mile. )

e. The percent increase (or decrease) of a value given the beginning number and the ending number. How would the result differ between increase and decrease?