Answer:
He can make up to 7 signs.
Step-by-step explanation:
Let x = the number of signs
[tex]\frac{2}{3}[/tex]x ≤ 4[tex]\frac{2}{3}[/tex]
[tex]\frac{2}{3}[/tex]x ≤ [tex]\frac{14}{3}[/tex] --- convert mixed fraction into improper
2x ≤ 14 --- multiply both sides by 3
x ≤ 7 --- divide both sides by 2
He can make up to 7 signs.
