Is 0.2 greater, less than or = to 0.5

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

For the sequence [tex]a_{n} = 2n/(n+1)[/tex], what is the value of [tex]a_{10}[/tex]