Please help out will give brainliest to the first person

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Do you mind if you guys me with this question i’m on number 8