Would each situation be represented by a positive or a negative number?
Column A Column B
A number of pizzas have been ordered, and 0.25 of all of the pizzas have been eaten. Express the amount of pizza remaining.
$2.50 per week has been earned for w weeks. Express the amount of money earned.
A town’s population, p, decreased by 4.5%. Express the change in the population.
A credit card account has 3 charges of $42 and no payments. Express the balance of the credit card.
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Anything that has to do with adding, earning, gaining etc. will use positive numbers.
Anything of the opposite such as subtracting, losing, taking away etc. will use negative numbers.