Can you guys let me know if i'm right

Acar dealership pays you 5% commission on your first $10,000 on car sales and 8% commission on the sale amount over $10,000 if you sold a $12,000 car how much is your commission

What is the value of x in the following equation. -x ^3/2 = -27

Write a similarity statement for the similar triangles. afgh ~ a