Question

write an integer to represent each situation. explain the meaning of zero in each situation. (example 1)

1. since his last vet appointment, a cat lost 2 ounces.
2. on first down, the football team gained 7 yards.
3. abigail withdrew $15 from her checking account.
4. by noon, the temperature had risen 5 degrees fahrenheit.

Explanation:

Step1: Analyze problem 1

Loss uses negative integer: $-2$. Zero = no weight change.

Step2: Analyze problem 2

Gain uses positive integer: $+7$ (or $7$). Zero = no yard gain/loss.

Step3: Analyze problem 3

Withdrawal uses negative integer: $-15$. Zero = no money withdrawn/deposited.

Step4: Analyze problem 4

Rise uses positive integer: $+5$ (or $5$). Zero = no temperature change.

Answer:

1. $-2$; Zero means no weight change since last vet visit.
2. $7$; Zero means no yard gain or loss on the play.
3. $-15$; Zero means no money withdrawn or deposited from the account.
4. $5$; Zero means no change in temperature by noon.