Chelsea walks 10 minutes east to her friend’s house. Then she and her friend walk 7 minutes west to the bus stop.

Using compass directions on a number line, which expression can be used to find how many minutes Chelsea’s house is from the bus stop?

+10 + +7

-7 + -10

+10 + -7

-7 - +10

Question

Chelsea walks 10 minutes east to her friend’s house. Then she and her friend walk 7 minutes west to the bus stop.

Using compass directions on a number line, which expression can be used to find how many minutes Chelsea’s house is from the bus stop?

+10 + +7

-7 + -10

+10 + -7

-7 - +10

anonymous · Answer

10 - 7 or 10 + -7

anonymous · Answer

East and West are opposite so she walked 10 minutes one way and 7 minutes back therefore it would be C: +10 + -7