Choose the equation you can use to solve the following problem.

Each cupcake costs $4.00. How many cupcakes, x, are purchased if the total cost is $36.00?
(Image: 4 plus x equals 36)
(Image: 36 minus x equals 4)
(Image: 4 x equals 36)
(Image: x divided by 4 equals 36)

(Image: 4 x equals 36)