Answer:
x<4
Step-by-step explanation:
-2x+20<2x+4
−2x+20−2x<2x+4−2x
−4x+20<4
−4x+20−20<4−20
−4x<−16
−4x/-4<-16/-4
x<4 its a open circle
I’m not sure about the estimates but the overall answers should be correct
To find the slope, use the equation of a line: 
Plug in the values for x and y:

We know that 2 can fit into 5 twice, which means 2*2 is 4.
We now have
.
If 5 is b more than 4, then this means that 4 is b less than 5. Subtract 4 from both sides, and you will have b = 1.
This means your equation is y = 2x + 1.
Answer:
x is 10°, expression of angle could be
180 - z or 180 - 5x, the value of y is 130° if z is 50°
Step-by-step explanation:
y + z is 180°
x is 50/5 = 10°
z is 50°
y is 180 - z = 180 - 50 = 130°
y can be 180 - 5x or 180 - z