ANSWER:
x=5
ok so
2x+3=4x-7
+7 +7
2x+10=4x
-2x -2x
10=2x
--- ----
2 2
x= 5
The break even point is when C and R are equal....so set them equal
36x + 200 = 76x
200 = 76x - 36x
200 = 40x
200/40 = x
5 = x
C = 36(5) + 200 R = 76(5)
C = 180 + 200 R = 380
C = 380
so the break even point is 380
Slope intercept inequality is in the form mx+b m standing for slope and b standing for y intercept
m= 4/3
b= -2 line passes (0,-2)
use y2-y1/x2-x1
(3,2)(-3,-6)
-6-2/-3-3
-8/-6
4/3 = slope
Let's set it up
y_ 4/3x-2
now the shaded area is on the LEFT side so this means that THE X has to be less than
The line is dashed which means it is not equal to!!
y >4/3x-2
plug in any (x,y) from the shaded area and see if this inequality is true
(-1,1)
1 >4/3 (-1)-2
1 >-4/3-2
1 >-4/3-6/3
1 >-10/3
Answer:
D :If 4x + 12 ≠ –4, then 3x + 7 ≠ −5.
Let they meet after second car travels for x hours'
let v be the speed of second car and V be speed of first car.
Then time taken by first car=x+2
V(x+2)=vx (distance covered is same.)
