Concept explainers
To find: Whether the number is negative, positive or neither.

Answer to Problem A1.1RP
The integer is positive.
Explanation of Solution
Given information:
The number given is 2.8.
Concept used:
If a number or an integer is less than 0 or lies to the left side of 0 in the number line, it is considered to be a negative number. It is denoted by a (-) sign.
If a number or an integer is greater than or lying to the right of 0 in the number line, it is positive in nature. It is preceded by a (+) sign. When no sign is mentioned, it is assumed to have a + sign and considered positive.
0 is neutral in nature.
Here, the integer is 2.8. It is not preceded by any sign.
Using the rule aforementioned, it can be deduced that the number has a + sign and can be considered positive.
Therefore, 2.8 is positive.
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Chapter A Solutions
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