How many variables are in the following expression: 4x2+7k−h%0D%0A4%0D%0A%0D%0A2%0D%0A+%0D%0A7%0D%0A%0D%0A−%0D%0Aℎ%0D%0A (1 point)%0D%0AResponses

There are three variables in the given expression: x, k, and h.