The total cost (c) is proportional to the number of pineapples (n) purchased. the price of each pineapple is $4. which equation represents the total cost of the pineapples purchased?
a) c = 4n
b) n = 4c
c) c =
n
4
d) c =
4
n

4.  c = 4n.

Step-by-step explanation:

The total cost = price of 1 pineapple * the number of pineapples bought.

$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