The number of visitors, in millions, to Bryce canyon national park from 2010 to 2010 can be modeled by the expression 1.281 (1.024)t, where t is the number of years since 2010. What is the factor, after t years, by which the number of number visitors has grown since 2010?

1.281

1.024

(1.024)t

1.281 (1.024)

what is the correct answer

After t years, the factor by which the number of visitors has grown since 2010 is (1.024)^t.

So, the correct answer is (1.024)^t.