The line that has the slope of 2 is Line C.
X^2+7x+12/x+3
x^2+7x+12/x+3
x^3+7x^2+12+3x/x
x^3+7x^2+3x+12/x
Answer:
x=15
Step-by-step explanation:
2x=15+x
2x-x=15
x=15
Answer:
When x <= 8000
The cost remains constant at 0.35 when x increases from 0 to 8000
The slope of cost function over this part is 0
When 8000 < x <= 20000
The cost remains constant at 0.75 when x increases from 8000 to 20000
The slope of cost function over this part is 0
When 20000 < x <= 42000
The cost decreases when x increases from 20000 to 42000
The slope of cost function

m= -5 × 10^-6
1. 1 1/3
2. 10 7/8
3. 4 7/15
4. 4/7
I hope this helps. :)