Need help solving this question​

9514 1404 393

  a = 36

Step-by-step explanation:

A stationary point is where the function derivative is zero. Here, we have ...

  y' = 2kx -16/x^2 = 0

For x = 2/3, this is ...

  4/3k -16/(4/9) = 0

  4/3k = 36

  k = 27

Then the value of y at that point is ...

  y = 27(2/3)^2 + 16/(2/3) = 12 +24 = 36

The stationary point of interest is (2/3, a) = (2/3, 36). a = 36.

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88