Two light bulbs are equally bright, but one has a power of 6 W while the other has a power of 10 W. In one hour the higher power bulb uses J more energy than the lower power bulb.

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