SELECT 100 AS Price, .07 AS TaxRate, (100 * .07) AS TaxAmount, ((100 * .07) + 100) AS Total
You don't need to make it look like 100 (dollars) I don't think, that wouldn't make sense. If you actually do, you could use
SELECT '100 (dollars)' AS Price, '.07 (7 percent)' AS TaxRate, (100 * .07) AS TaxAmount, ((100 * .07) + 100) AS Total