Carolina goes to a paintball field that charges an entrance fee for $18 and $3 per bag of paintball. The field has a promotion that says, “ Get $10 off if you spend $75 or more!”. Carolina wonders how many bags of paintball she needs to buy along with the entrance fee to get the promotion. Let
B represent the number of boxes of paintball that Carolina buys.

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.

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step-by-step explanation:

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32