Find the fifth term of this sequence? 3n^2-1

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?