A pupil recorded the times of 23 people running the 100 metres. The stem-and-leaf diagram shows the results.
13
14
14
6
1
7
3
4
7
8
9
15
1
1
3
4
4
N On oN
15
N-
7
8
8
9
16
4
4
What was the range of times?

Question and answers are in the attached picture. you so much in advance.

Which graph corresponds to the function f(x) = x2 + 4x – 1?

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse.a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?