Answer:
90 goats
Step-by-step explanation:
Number of chickens in farm = (1/5) of 150
= 
= 1 * 30
= 30
Number of cows in farm = 
= 1 * 30
= 30
Number of goats in farm = 150 - (30 + 30)
= 150 - 60
= 90
Answer:
The answer is "140".
Step-by-step explanation:
Calculating the average cost:

To minimize average cost we have to find x for wich A'(x)=0
X would have to be less than 12, y would have to be less than 6. So a graph displaying x less than or equal to 12 and y less than or equal to 6.