Step-by-step explanation:
speed = distance/time
speed = 871÷13
speed = 67 mph
distance = speed x time
distance = 67mph X 9hrs
distance = 603 m
Just add. 6.5+12.3= 18.8 then subtract 20-18.8= 1.2. She needs 1.2 mores yards
Answer: Its 39x + 45
Step-by-step explanation:
yes
Answer: 
Step-by-step explanation:
The Explicit formula in function notation for a geometric series is:

Where
is the nth term of the sequence,
is the first term in the sequence and
is the common ratio.
Given the following geometric serie:

The common ratio is:

And the first term is:

Therefore, substituting values, we get that the Explicit formula that represents this geometric series is:
