Answer:

Step-by-step explanation:

Add 2 to both sides:


Subtract 7x from both sides:


Divide both sides by -1:


From calculus, to determine the maxima or minima of the graph, get the derivative of the equation and equate to zero. So, we derive first the equation of the graph and equate to zero.
C = 0.25x² - 80x + 30000
dC/dx = 0 = 0.5x - 80 + 0
0.5x = 80
x = 80/0.5
x = 160 units
The minimum cost (although not asked) is:
C = 0.25(160)² - 80(160) + 30000
C = $23,600
The answer is 160 units.
Answer:
2r+12c
Step-by-step explanation:
Answer:
7/8:1/4
Step-by-step explanation:
0.875 is equal to 7/8 and you can’t simplify 7/8 or 1/4 any more so the simplified answer is 7/8 : 1/4
Answer:
27 I do believe so sorry if im wrong
Step-by-step explanation: