Hey there!
4 + 8x < -20
8x + 4 < -20
SUBTRACT 4 to BOTH SIDES
8x + 4 - 4 < -20 - 4
CANCEL out: 4 - 4 because it give you 0
KEEP: -20 - 4 because it help what number is being compared to the x-value
NEW EQUATION: 8x < -20 - 4
SIMPLIFY IT!
8x < -24
DIVIDE 8 to BOTH SIDES
8x/8 < -24/8
CANCEL out: 8/8 because it give you 1
KEEP: -24/8 because it help what number is being compared to the x-value
NEW EQUATION: x < -24/8
SIMPLIFY IT!
x < -3
IT IS AN OPEN CIRCLE SHADED to the LEFT
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)