If jake wants to buy 480 pounds (p) of apples, how many cases(c) does he need to order. p=24c

Hence, he need to order 20 crates if he buy 480 pounds of apples.

Step-by-step explanation:

We are asked to find the number of cases(c) he need to order for a 480 pounds of apples.

i.e. we are asked to find the value of c when the value of p is: 480

We are given a expression that represents the relationship between p and c is given by:

                      p=24c

now we put p=480

480=24c

⇒   c=480/24

⇒  c=20

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

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.