Answer:
5x+4
Step-by-step explanation:
use the equation mx+b I think this is right but I really dunno
Tax = 3$
Tot Cost = 33$
10% of 30$ is 3$
(0.10 * 30 = 3)
the tax is 3$
30$ + 3$ = 33$
the total cost is 33$
8x