Aplumber has 2.5 meter long copper wire he needs to cut links of 60 cm 35 cm and 90 cm work out how much the initial 2.5 metres long pipe is left

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio