ANSWER: The length of the entire dash is 700 meters.
EXPLANATION:
Because 20% of the dash equals 140 meters, we can use a variable to figure out the length of the entire dash.
Let x be the length of the entire dash.

The length of the entire dash is 700 meters.
8, the answer needs to be more than a certain amount of characters.
Plug in 3 for n, since you're looking for the third term.
T(1) = 3(1) - 1 = 2
T(2) = 3(2) - 1 = 5
T(3) = 3(3) - 1 = 8
It would be 8.
Y = 2x
y = 2*(-15) = -30 . . . . . selection A is appropriate