1. **State the problem:** Leila is buying a dinosaur model priced at $x$ dollars, and she must pay an additional 7% tax. We want to find an expression representing the total amount Leila pays.
2. **Formula used:** The total price including tax is given by:
$$\text{Total Price} = \text{Original Price} + \text{Tax Amount}$$
3. **Calculate the tax amount:** The tax is 7% of the original price $x$, so:
$$\text{Tax Amount} = 0.07 \times x$$
4. **Write the total price expression:**
$$\text{Total Price} = x + 0.07x$$
5. **Simplify the expression:**
$$x + 0.07x = (1 + 0.07)x = 1.07x$$
6. **Interpretation:** The total amount Leila pays is $1.07x$, which means she pays the original price plus 7% more as tax.
**Final answer:**
$$\boxed{1.07x}$$
Total Price
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