The reason that 9.6 is rational is because it can be turned into a fraction.
The fraction is 48/5.
Rational numbers are numbers that can be turned into a fraction, while irrational numbers a those who cannot be turned into a fraction.
S he will get $9 change because 7 + 4 = 11
and 20-11 = 9.
So therefore she will get $9 change
I'm not a 100% sure but I think it is 64 ft if somebody see this and see that I'm wrong please correct me
