I dont get it? may someone help?

D

18y = 306

y = 25 - x

Step-by-step explanation:

y is the number of 18-inch containers.

1 18-inch container occupies 18 inches

y number of 18-inch containers occupy 18y inches.

We are told that  the 18-inch containers occupy 306 inches.

The gives us one equation:

18y = 306    Equation 1

There are 25 containers altogether. x number of them are 12 inches. y number of them are 18 inches. This give us the second equation.

x + y = 25

Now we solve the second equation for y.

y = 25 - x    Equation 2

Put Equations 1 and 2 together, and you have a system of equations.

18y = 306

y = 25 - x

D

18y = 306

y = 25 - x

i dony know

step-by-step explanation:

c

step-by-step explanation: