What are three habits that you plan to change in your own life to ensure that you age healthier?

Stop drinking 6 Pepsi a day, stop smoking & learn how to manage my stress level.

Explanation:

a and b sometimes have a positive value

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles