Hi, the answers are actually simple. Please refer below for correct answers:-
1. 100 feet above sea level.
2. A debit of $13
3. 46°F above zero
4. A credit of $17.
How to find it?
There is exactly no real equation to find it but we use our own logic and common sense.
Let's take, for example, Question 1. In it, we can make it's opposite by converting the auxillary functional word. I meant that, we can convert the word "below" to "above" , so , we made it's opposite or negative expression. Likewise, for all other equations and sentences, we can do the same.
But first of all, you must know the opposite of certain words like credit, debit etc. Then, this will become very simple.
Hope it helps you and made you understand....
{ Answered by Benjemin }