Physics assignment

You are flying in an ultra-light aircraft at a speed of 41 m/s. An eagle, whose speed is 10 m/s, is flying directly toward you. Each of the given speeds is relative to the ground. The eagle emits a shrill cry whose frequency is 3400 Hz. The speed of sound is 330 m/s. What frequency do you hear?

Please explain each steps in arriving at the answer.