Detemine the direction that this parabola open y=-2x^2+4x+1 up or down

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

God's gym charges a sign-up fee of $100 plus $30 per month. write an expression to represent how much someone would pay for a membership.