The answer is A i believe so cause its adding 4 seats every time and you multiply 4*21 <span />
150 because if it is going 420 in 14 hours you divide 420 by 14 which gives you 30 and then you multiply 30 x 5 and you get 150 so the bird goes 150 miles in 5 hours
It is the distance between -14 and 0 on the number line
13/20
make the common denominator 20
2/5 = 8/20
1/4 = 5/20
8/20 + 5/20 = 13/20