Find the 13th term of the following sequence: -3,-18,-108...

Question

i have to find the 25th term of the sequences of :a power of 1=7and the common difference is 7 and the 35th term of the sequence of a1=10and the common difference is 3.

Answer 1

look line term n=6*term(n-1)

but term 1=3 (not 6)

& gotta put negativ in front

then term 13=-(6^12)/2

6^12=2,176,782,336

half=1,088,391,168

###### for that xtra stuf at bottom...figger out how tu sae it & then ask it agin