Final answer:
The population of squirrels is calculated by the function P(6) = 5(2)^6, which results in a population of 320 after 6 years.
Step-by-step explanation:
To find the population of squirrels in 6 years, given the initial population and the rate of growth, we use the function P(t) = 5(2)^t. Here, t is the time in years. Substituting t with 6, the equation becomes P(6) = 5(2)^6. Calculating this gives us P(6) = 5 × 64, which equals 320. Therefore, the population of squirrels in 6 years is 320.