Question

Which choice represents the best rational approximation for 35?

A) 5.9
B) 6.2
C) 6.7
D) 7.1

Answer 1

a) 5.9 
because when you square 35 it comes up as 5.916

Answer 2

I would say 7.1 or D.  Though, if we are rounding, the answer might be 6.7, or C.

In the theory we are rounding to the nearest whole number;
A: 5.9, would be closer to 6 and 6 does not multiply into 35
B: 6.2, would be six, and would not multiple to 35
C: 6.7, would round to 7 and 7 fits into the multiple of 35
D: 7.1, Would round to 7, and fits into multiple of 35. 

I hope this helps!