Answer:
x <5
Step-by-step explanation:
2(4 x + 3) < 5 x + 21
Distribute
8x +6 < 5x +21
Subtract 5x from each side
8x -5x +6 < 5x-5x+21
3x +6 < 21
Subtract 6 from each side
3x+6-6 <21-6
3x <15
Divide each side by 3
3x/3 <15/3
x <5
Hey there!☺
(-∞, 5)

You need to convert the inequality as an interval notation.
as interval notation would be written like this:
(-∞, 5)
Hope this helps!
Y=mx+b
m=slope
b=yint
slope=5/6
ying=-3
equation is y=5/6x-3
X=15
Just divide 5x by 5 and 75 by 5
Ahh thank you so much !! <3