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Grade 9 math

For question a, why can’t the equation be 36t + 18(t+3) but 36(t-3) + 18t? Really need help :(

Grade 9 math For question a, why can’t the equation be 36t + 18(t+3) but 36(t-3) + 18t-example-1
User Monolith
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1 Answer

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If you insert 0 in the first formula, that means that they both haven’t worked yet, you have 18x3=54 dollar. This means that they earned money before working and that is not the situation. The second formula is also not true, because if they work for 1 hour, so you insert, you get a negative value, so they lose money.
User Threxx
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