Question

Write an integer that represents each of the following.

i. 90 feet below sea level
ii. $100 of debt
iii. 2°C above zero

Answer 1

The correct answers are:

1. -90
2. -100
3. +2

Explanation:

1. As sea level is equal to zero, 90 feet below sea level is -90 ft. The integer is -90.
2. As debts are consider negative in a balance, $100 of debt are -$100. The integer is -100.
3. As 0°C is the zero of the Celcius scale, 2°C above zero is +2°C. The integer is +2.