What is the second answer? NEED HELP!

I don't know the n or what ever but what i do know is that it's adding the negative number of the number shown

7 + (-7) = -14

-14 + (-14) = 28

28 + (-28) = -56

...

if that makes sense

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40