The mean temperature for the first 7 days in january was 4 °c. the temperature on the 8th day was 5 °c. what is the mean temperature for the first 8 days in january? i need a answer to this . no incorrect answers .  i beg my life, can someone give the correct answer! 

Which one is true about the hexagons ?

Harold wrote this equation to model the level of water in a pool over time. the variable x represents time in hours. f(x) = 3,500 - 225x which statements about the situation are true? check all that apply. the water level is rising. the water level is falling. the initial level of water in the pool was 3,500 units. the initial level of water in the pool was 225 units. the pool was empty after 14 hours. the water was 2,600 units high after 4 hours.

Y=x+2 4x+3y= -36 system of equation