Final answer:
As x approaches positive infinity, the value of y in the given function is [infinity].
Step-by-step explanation:
To describe y as x approaches positive infinity, we can simplify the function f(x) = 3(0.9) (x-2) + 1.
As x approaches positive infinity, the term 3(0.9)(x-2) grows larger and larger, approaching infinity. Adding the constant term 1 to the infinite value gives us an answer of [infinity].