Answer:
24.02 inches
Step-by-step explanation:

Thus, board is 24.02 inches long.
N is the number
divided by 6 then n/6
5 was taken away so (n/6)-5
the result is multiplied by 2 so 2((n/6)-5)
result is -12
-12=2((n/6)-5)
divide both sides by 2
-6=(n/6)-5
add 5
-1=n/6
times 6
-6=n
da number was -6
Divide total distance by total time:
5 feet / 2 seconds = 2 and 1/2 feet per second.
Sn = n/2 (a1+an)
= 8/2 (3-38)
= 4 (-35)
= -140