She can water 12 plants because 3,000 divided by 250 equals 12.
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Their approximate heating expense would be $1,920. Hope this helps!
Answer:
x=0
Step-by-step explanation:
combine like terms on both sides of the equal sign
-9+x= x-7
move similar terms to the same side
-2=0x
divide both sides by x
x=0
25. yes it's direct variation
26. yes
