Yes
Yes it is.
No.
No
15.6 is rational. If a number can be expressed in the form of one_integer/another_integer it is a rational number. 15.6 = 153/5 = 79/5 Thus 15.6 is a rational number
Approximately 8.8 repeating. While true, the answer is misleading in the sense that a repeating decimal implies a rational number whereas sqrt(79) is irrational. Sqrt(79) = 8.888194..
Yes
It can be written as a fraction, so it is rational.
0.79 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 79/100 which cannot be simplified.
0.79 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. And, since it is a decimal fraction, there is not another simpler decimal form. Its equivalent, in rational form, is 79/100 which cannot be simplified.
679 is an integer and not a fraction. However, it can be expressed in rational form as 679/1.
Rational
1.14 is rational.