Just solve the equations:
<span>A) X - Y = 11
B) 2x + Y = 19
Multiply A) by -2
</span>
<span>A) -2X +2Y = -22 then add to B)
</span><span>B) 2x + Y = 19
3Y = -3
Y=-1
</span>
<span>A) X - -1 = 11
x = 10
</span>
180/3 = 60
Therefore the car traveled 60km per hour.

The one is a vertical translation of the parent function to the left of one

making it -1.
B) The symbol means less than OR equal to.
E) The symbol means more than OR equal to.
F) The symbol means equal to.