5. Ms. Ford works 4 days a week at her office and 1 day a week at home. The route to Ms. Ford's office is
23.7 miles. The route home is 21.8 miles. About how
many miles does she drive for work each week?
Write how you found the answer.
25 points

136.5

3(23.7)+3(21.8)

71.1+3(21.8)

71.1+65.4

136.5

I hope this is good enough:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.