Question

A conservationist determines that a particular beach is eroding at a rate of 1.1% each year. When writing an explicit formula to represent the amount of beach remaining each year, which value should she use as the common ratio?
a.0.011

b.0.089

c.0.989

d.1.011

Answer 1

Straightforward question
the answer is a.0.011, because 1.1%= 1.1/100=0.011

Answer 2

Common ratio for the amount remaining is 1 - 0.011 = 0.989