Final answer:
The area of a right triangle can be expressed as a function of the base by using the formula A = b^2.
Step-by-step explanation:
The area of a triangle can be calculated using the formula: A = (1/2) * b * h, where A is the area, b is the base, and h is the height. In this case, the height is given as twice the base, so we can write the equation as: A = (1/2) * b * (2b) = b^2. Therefore, the area of the right triangle is represented as a function of the base as A = b^2.