Answer:
c + 9
Step-by-step explanation:
Given phrase,
The total number of cars in the garage and the 9 cars outside,
Since, the number of cars in garage is unknown,
Thus, the number of cars in garage can represent by a variable,
Here, c is given for the variable,
So, we can say that c represents the number of cars in garage,
Hence, the total number of cars in both garage and outside = c + 9
Which is the required variable expression.