Final answer:
To model 3x + 3 using Algebra tiles, use 3 x-tiles to represent 3x and 3 unit tiles to represent the constant term 3.
Step-by-step explanation:
To model the expression 3x + 3 using Algebra tiles, you can start by representing 3x using 3 x-tiles, each representing x. Then, add 3 unit tiles to represent the constant term 3. The final model would consist of 3 x-tiles and 3 unit tiles.
This visual representation will help you understand the composition of the algebraic expression better, and it can be especially useful when you move on to perform operations such as adding, subtracting, or multiplying polynomials with the help of tiles.