Answer:
4x <= 20
x <= 5
A single cupcake can cost at most $5.
Step-by-step explanation:
Let the price of a single cupcake be x.
We know that there are 4 cupcakes in a box, so 4x is equal to the price of 4 cupcakes and hence the price of a box.
The question tells us that a box costs at most $20, so we can write this as an inequality:
4x <= 20
Divide both sides by 4 to isolate and solve for x:
x <= 5
x is less than or equal to 5, which can be interpreted as a cupcake costing at most $5.
