#### Answer

A(n)=A(1-n)+0.8 ; A(1)=1.1

#### Work Step by Step

The formula for a recursive equation is A(n)=A(1-n)+c (c is the common difference)
We can find c by subtracting the first and second terms from each other.
c=1.9-1.1
c=0.8
This gives us the equation A(n)=A(n-1)+0.8 ; A(1)=1.1
And since we know the first term in the sequence, we have to list in next to the formula.