Which correctly describes the net of a square pyramid?

What is the value of the expression below? (81^2)^1/8

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

Kayla has a $500 budget for the school party.she paid $150 for the decorations.food will cost $5.50 per student. what inequality represents the number of students,s, that can attend the party?