C. 15
-1 is not a natural number so B is not your answer
0.5 is not a whole number so D is not your answer
0 is not a natural number so A is not your answer
If the family walked 2/5 of a mile in 2/7 of an hour their MPH would be 2.8mph
Step-by-step explanation:
finding for 3√512
=67.882250993908562
rounded to the n nearest whole number=68
12:7*2=24:14
The radio is of 12:7 is 14:14
2x+ 1 = 3x - 1 ;
1 + 1 = 3x - 2x ;
2 = x ;
x = 2 ;
Then, y = 2x2 + 1 = 5 ;
