Question

Would each situation be represented by a positive or a negative number?
Column A Column B
1.
1.5 acres of rainforest are destroyed every second for s seconds. Express the change in acreage of rainforest.
2.
A tub of water is heated by 0.3 degrees per minute for m minutes. Express the change in temperature.
3.
A submarine descends at a rate of 0.9 m/s for 90 s. Express the change in altitude relative to sea level.
4.
A credit card account has 2 charges of $15 and no payments. Express the balance of the credit card.
A.
positive
B.
negative
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