Can anybody do this puzzle

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

The dance committee of pine bluff middle school earns $72 from a bake sale and will earn $4 for each ticket they sell to the spring fling dance. the dance will cost $400 write an inequality to determine the number, t of tickets the committee could sell to have money left over after they pay for this year's dance. what is the solution set of the inequality?

15. if the 8% tax on an item amounts to $0.96, what is the final price (tax included) of the item?