Simple machines are designed to increase

a) gravity

b) friction

c) force

d) mechanical advantage

D. Mechanical Advantage.

Explanation:

I just took the semester test and this answer was actually correct.

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