10 students were asked how much time they spent on computers each week and were timed running 100m.. here are the results;

100m time comp hours

11.3 8

13.0 13

13.6 11

15.1 10

16.4 18

15.8 16

12.6 6

12.2 10

14.5 14

11.5 5

estimate the 100m time for a student who spends 11 hours a week on a computer

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.