The percentage that the store has taken off would be 30%.
Answer:
$13.5
Step-by-step explanation:
Divide the total amount raised by how many students the money was divided among.
135/10=13.5
≈ 68.2°
tan X= 20/8
tan X= 2.5
x= tan ⁻¹ 2.5
x ≈ 68.2°
