f(n) = -6.5n + 14.5
&
f(1) = 8, f(n+1) = f(n) - 6.5
√4 + <span>3√9 = 2+3*3 = 11.
This is a rational number, since the answer can be express as a fraction (e.g., 11/1).
This does not hold for square roots in general. For example </span>√3 is irrational.
The answer is 57.5%
hope I've helped : )
22% I hope it helps you I'm not positive I'm not the best but she was 22 numbers away from getting it right so
Answer:
So options 1,2,3,6 are rational numbers.
Step-by-step explanation:
1). In this option the given number is √100×√100 =10×10=100
Which is a rational number.
2) 13.5+√81 = 13.5 + 9 = 
Its a rational number
3) √9+√729 =3+ 27 =30
It is a whole number which is the form of rational number.
4) √64+√353 = 8 + 18.788924( an irrational Number) =26.79
So addition of any number to an irrational number is always irrational number.
5)
= 1/3 + 14.6969( an irrational number)
When we add any number to an irrational number it's sum is always irrational number.
6) 
Again addition of two rational number giving a fraction.So it is a rational number
So options 1,2,3,6 are rational numbers.