Aluminum, carbon, and calcium are examples of what type of matter?

solution
heterogeneous mixture
element
compound

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

490 n

f=125n a=2.5m/s2