Question

Please help me on this question

Answer 1

cool, this is what I just took


a1=first term
since it starts with -3, a1=3
sub
an=-3r^(n-1)
common ratio is what must be multiplied to get next term
-3 times what is -6
answer is 2
r=2

`a_(n)=-3(2^(n-1))` is equaiton (first option)