If you were born in 2005 when will you be 21

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Asandwich shop has 18 tables. each table seats up to 4 people. to find the greatest number of people that can be seated, you can solve p4 ≤ 18. which step is the best way to solve the inequality? plz asap i repeat plz

Find all the angles that satisfy the equation cos(θ)=32