Given

To obtain the minimum value of y, we first take the derivative of y
The derivative of y is:

Equating

gives the minimum value we require.
Doing that, we have:

So that

Therefore, the minimum value is x = 3
Answer:
a) x = 70
Step-by-step explanation:
70 (2) +20 +20
140 + 40
180
Since a ton is 2000 pounds
You would divide 13600 pounds in half so your answer would be
C>>>6.8 tons