Which represents polygenic inheritance of traits?

Polygenic inheritance is a pattern of inheritance when the trait is not controlled by one gene, but by multiple genes that each make a small contribution to the overall outcome. In this case, the trait of the eye color is controlled by different genes (for blue, green, and brown eye colors)

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.