Answer:
Three points that are member of the solution set could be (-2,10), (5,5) and (10,13)
The graph in the attached figure
Step-by-step explanation:
we have
----> inequality A
The solution of the inequality A is the shaded area above the dashed line
-----> inequality B
The solution of the inequality B is the shaded area above the solid line 
The solution of the system of inequalities is the shaded area between the dashed line and the solid line
see the attached figure
A solution to the system of inequalities is any point in the shaded area.
therefore
Three points that are member of the solution set could be (-2,10), (5,5) and (10,13)
Answer:
Step-by-step explanation:
C(x)=2x^(2)-24x+720
Slope = 
Differentiating to get the slope;
= 4x - 24
Lowest cost is when the slope is zero, therfore ;
⇒ 4x-24 = 0
⇒ x = 6
substituting for x
c(6) =
-24(6)+720 = 648
Lowest cost is $648
2x+2y=4x+6y
and then x will equal 2y
Tried my best here, but sorry if they are wrong
2. 15r - 7j
3. 4b - 2n
4. 12g - 4g = 8g
5. 8c - 5
6. 2(2b + 6j)
7. 3(2s - 5f)
8. 10c + s + 2p
9. 2a <3p
10. 5(a+b)
11. 1/2r + 3/4g
12. 10(b * f)
It is 53°....................