4. Members of a city council are considering purchasing new hybrid buses for the city's transit system. Diesel buses are currently being used in the city. The
table gives the purchase price and miles per gallon for each type of bus. Both
types of buses use diesel fuel that costs an average of $4.20 per gallon.

for b its (t) and c its (d)

step-by-step explanation:

1,645,493,059.35

step-by-step explanation:

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.