Question 4 is (1,2)
Question 5 is (1,0)
These are are definitely correct
To answer this item, we take the differential of the equation and equate to zero.
C(x) = 0.8x² - 256x + 25939
Differentiation,
dC(x) = 1.6x - 256
dC(x) = 1.6x - 256 = 0
The value of x from the derived equation above is 160.
Thus, the number of machine to be made in order to minimize the cost should be 160.
92 - 20 = 72
72 / 2 = 36
36 + 20 = 56
36 + 56 = 92
So 36 and 56 are your answer
I believe the total is $211.27.
After doing multiple searches on the internet, I believe that tax rate is a percentage of the product that is added to the total cost.
9 percent of 193.84 is 17.4456, which rounds up to 17.44, and 17.44 added to 193.84 is 211.27.
<em>Please, if something isn't correct here, don't refrain to tell me, and I will correct my mistake. Thank you.</em>
