Final answer:
To calculate the number of guitar lessons in 8 months, you would substitute 8 into the function g(t). However, the specific function g(t) is not provided, thus a precise answer cannot be given without knowing the form of g(t).
Step-by-step explanation:
The function g(t) represents the number of guitar lessons you can complete in t months. To find out how many guitar lessons you can complete in 8 months, you would typically substitute the value 8 for t in the function and then calculate g(8). However, since the actual function g(t) is not provided in the question, we cannot give a definitive answer. If the function was linear, such as g(t) = nt where n is the number of lessons per month, then it would be n times 8. If the function had a different form, the number of lessons would be calculated according to that specific function.