5120 m/s = 18.432<span> kph
</span>Conversion base : 1 mps = 3.6 kphConversion base : 1 kph = 0.27777777777778 mps<span>
</span>
1 yard = 3 feet
48/3= 16 yards
3 x 5280 = 15840 feet
therefore the answer is 15840 feet (D)
Yes it is a solution because if you take the equation and plug the point in for the x and y :
4 (2) + 3 (3) < 20
8 + 9 < 20
17 < 20
which is true
10 (2) + (3) > 10
20 + 3> 10
23>10
which is also true
