Karina walks 19 minutes east to her friend’s house. Then she and her friend walk 10 minutes west to the bus stop.
Using compass directions on a number line, which expression can be used to find how many minutes Karina’s house is from the bus stop?

19 + -10

-10 + -19

+19 + +10

+10 - +19

Question

Karina walks 19 minutes east to her friend’s house. Then she and her friend walk 10 minutes west to the bus stop.
Using compass directions on a number line, which expression can be used to find how many minutes Karina’s house is from the bus stop? 
 
19 + -10 


 -10 + -19 

 +19 + +10 

 +10 - +19

anonymous · Answer

Simplest way is drawing a picture|dw:1352679222951:dw|