Answer:
-1 and 4
Step-by-step explanation:
The formula is [tex]a_{n} = a_{1}(r)^{n-1}[/tex]
The first blank is [tex]a_{1}[/tex] which is the first term, -1
The second blank is r which is the common ratio, 4.
TIP: if the rule of the sequence was to divide by 4, then the common ratio would be 1/4.
[tex]a_{n} = -1(4)^{n-1}[/tex]
Hope this helps!
