A) By the rules of secants,
5(x +5) = 6(6 +4)
x + 5 = 12
x = 7
b) 3(3 +5) = 4(x +4)
6 = x +4
2 = x
Unit rate means price for 1 amount of that thing
so 6 steaks
so price or amount of steak per 1 steak
72oz/6steaks
we want to find
xoz/1steak
72/6=12/1
12oz/1steak
unit rate is 12 oz per steak