Indicate whether the following statements are true (t) or false (f).
1. √49 is a rational number
2. 2 is a real number
3. π is a real number
4. -17 is an integer
5. √3 is a rational number
6. 0 is a natural number
7. 32 is an integer

1.  False because a rational is a fraction or part of a number ().  

2.  True; a real number is any number that isn't imaginary ()

3.  True; same reason

4.  True; an integer is any number that can be wrote without a fraction or decimal (the opposite of rational).

5.  True; and that's a decimal.

6.  True;  the natural number system starts from 0 and counts upwards

7.  True;  reason above

In this problem it decreased 20%

Absolute value graph shifted point 5 up