Give the starting value, constant multiplier and equations for each of the following geometric( exponential) sequences

In (ii) the starting value is 0.27
constant multiplier is
[tex]\frac{0.0243}{0.27}=0.09[/tex]And the equation is 0.27+0.0243+0.0022
Similalry in part (iii)
the starting value is 4.12
constant multiplier is
[tex]\frac{4.2436}{4.12}=1.03[/tex]And the equation is 4.12 +4.236+ 4.3709