What is the length of red segment EC to the nearest tenth?

Plzzz maths ! quadratic sequences=an^2+c 1) 11,17,27,41,59 2) 7,16,31,52,79 3) 6,18,38,66,102 4) 0,9,24,45,72 5) 0,12,32,60,96

Which system of linear inequalities is represented by the graph?

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3