Find the first five terms of the sequence

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Which of the following vectors are orthogonal to (2,1)? check all that apply

What is the measure of angle 1? a.28 b.152 c.168 d.64