What is the explicit formula that represents the following sequence? {1,-6,36,-} a5

We see this a geometric sequcne because each term is -6 times of the previous term

an=a1(r)^(n-1)
an=nth term
a1=first term
r=common ratio
n=which term

we see that it multiplies by -6 each time
and the first term is 1

so r=-6
a1=1

an=1(-6)^(n-1)
the explicit formula is


and a5=1(-6)^(5-1)=1(-6)^4=1296

The answer is 1 because you have to flip the sign when dividing by negative number and 3

Where’s the graph too show me?