A child earns $5 each week for watering a neighbor’s garden. Which equation represents the total amount the child earns, t, for watering the neighbor’s garden for w weeks?

Step-by-step explanation:

Elena babysits her neighbor’s children. Her earnings are given by the equation  y=8.40x , where  x  represents the number of hours she worked and  y  represents the amount of money she earned.

Jada earns $7 per hour mowing her neighbors’ lawns.

Who makes more money after working 12 hours? How much more do they make? Explain your reasoning by creating a graph or a table.

What is the rate of change for each situation and what does it mean?

Using your graph or table, determine how long it would take each person to earn $150.

Clare and Han have summer jobs stuffing envelopes for two different companies.

By creating a graph, show how much money each person makes after stuffing 1,500 envelopes.

What is the rate of change for each situation and what does it mean?

Using your graph, determine how much more money one person makes relative to the other after stuffing 1,500 envelopes. Explain or show your reasoning.

Han earns $15 for every 300 envelopes he finishes.

Clare’s earnings can be seen in the table.

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.