If S6=497.952 and r=25, what is the value of a1?

a(1-r^n)/(1-r) = S;

in this case, n = 6 and r = 4/5

Then, a = S6(1-(4/5))/(1-(4/5)^6) = 737.856(.2)/(1-.262144) = 737.856(.2)/.737856 = 200

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

what? that isnt a question

step-by-step explanation: