Given a term in a geometric sequence and the common ratio, find the explicit formula, a11=5120 ans r=-2

Step-by-step explanation:

Given a geometric sequence, the nth term of the geometric sequence is obtained by using the formula:

If the eleventh term,

and the common ratio, r=-2.

Then:

The explicit formula for the sequence is:

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )