Virenas Scout troop is trying to raise at least $650 this spring. How many boxes of cookies must they sell at $4.50 per box in order to reach their goal?

They must sell 145 boxes to achieve their goal

Set up an equation

Let x represent how many boxes sold

650 = 4.50x

Solve

650/4.50 = 4.50x/4.50

144.4444444

≈145 boxes

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.

7.3

step-by-step explanation: