The answer is the third option.
x and y are both to the first degree so we know it makes a straight line.
Next check the ordered pairs to see which set are true in the equation.
Answer:
For covering 
unit area of the entire playground, the amount of sand required is equal to volume of 
buckets of sand.
Step-by-step explanation:
Given -
volume of sand in bucket is able to cover 
area of the entire playground
Thus,
For covering unit area of the entire playground, the amount of sand required is equal to of the total volume of sand in bucket
For covering unit area of the entire playground, the amount of sand required is equal to
For covering unit area of the entire playground, the amount of sand required is equal to volume of buckets of sand.
Here you go hope this helps
If you paid a total of 15.92 and also paid 1.99 per song, then you must divide the total by the cost per song.
As such 15.92/1.99 = 8 songs. :)
Simplifying
-2x + -4y = 9
Solving
-2x + -4y = 9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '4y' to each side of the equation.
-2x + -4y + 4y = 9 + 4y
Combine like terms: -4y + 4y = 0
-2x + 0 = 9 + 4y
-2x = 9 + 4y
Divide each side by '-2'.
x = -4.5 + -2y
Simplifying x = -4.5 + -2y<span>13/18
169
-11
</span><span>5x - 5y = 7</span><span>
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