Which is better value 0.8 litres of oil for €2.40 or 1.5 litres of oil for €3.30?
2 answers:
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Answer:
- Keep plugging in the points and see the ones that work, for example, (-1,7)
true, so select it
- Keep doing that for the rest of them , some like (3,15) won't work so you just have to keep testing each point.
Answer:
Step-by-step explanation:
Move 3k to left hand side and change it's sign
Similarly, move 4.5 to right hand side and change it's sign
Collect like terms
Subtract 4.5 from 18
Divide both sides by 4.5
Calculate
Hope I helped!
Best regards! :D