## College Algebra 7th Edition

(a) We use $P=10000$: $10000=15.6v^{3}$ $v^{3}\approx 641.02$ $v\approx 8.6$ So the wind would have to blow at a speed of 8.6 km/h. (b) We use $P=50000$: $50000=15.6v^{3}$ $v^{3}\approx 3205.13$ $v\approx 14.7$ So the wind would have to blow at a speed of 14.7 km/h.