Answer:
[tex]x\geq \$6.67[/tex]
Step-by-step explanation:
Let
x------> the cost of each ticket
we know that
[tex]3x\geq 20[/tex] ----> inequality that represent the situation
solve for x
Divide by 3 both sides
[tex]x\geq 20/3[/tex]
[tex]x\geq \$6.67[/tex]