Let the cost of a chicken be x and the cost of a duck, y, then
50x + 30y = 550 . . . (1)
44x + 36y = 532 . . . (2)
(1) x 6 ⇒ 300x + 180y = 3,300 . . . (3)
(2) x 5 ⇒ 220x + 180y = 2,660 . . . (4)
(3) - (4) ⇒ 80x = 640
⇒ x = 640 / 80 = 8
From (1): 50(8) + 30y = 550
⇒ 30y = 550 - 400 = 150
⇒ y = 150 / 30 = 5
Therefore, the price of a chicken is $8 and the price of a duck is $5.
An exponential decay function is a function that decreases in quantity. Hope this helps
X is greater than or equal to 21
37 1/2 miles what you would do is turn them into decimals and then add them 3 3/4 would be 3.75 miles and 2 1/2 would be 2.5 and you take both them and multiply them by 6 and add the two final answer to get 37 1/2 miles or 37.5 miles.