Thomas bought a vase for $10 and x flowers that cost $2 each.

10 + 2x

To calculate the total cost of the vase and flowers, you need to know the value of x, which represents the number of flowers Thomas bought. Once you have that information, you can use the following formula:

Total Cost = Cost of the vase + (Cost per flower x Number of flowers)

Given that Thomas bought a vase for $10 and x flowers that cost $2 each, the equation becomes:

Total Cost = $10 + ($2 x x)

If you know the value of x, plug it into the equation and solve for the total cost. For example, if Thomas bought 5 flowers (x = 5), the calculation would be:

Total Cost = $10 + ($2 x 5)
= $10 + $10
= $20

Therefore, the total cost of the vase and 5 flowers would be $20.