3. With real-world situations, always choose a
variable to represent the unknown quantity,
then translate the words into an equation.
Example 3: A gardener needs 78 meters of fence to
enclose a rectangular garden. The length of the
garden is 9 m more than the width.
a)Choose a variable for width (in meters) and use it to
write an expression for the length
b)Write an equation that represents the facts given.
4. Example 4: Use the following facts to state an
equation the represents the sentence shown in color
Fran rode her bike from her home to school and
back. The return trip took two minutes less than
the trip to school. Fran’s total round-trip time
was 23 minutes.
a)Identify a variable
b)Write the equation.
