Will Mark Brainliest!!!
Milly loves to go to the park and play on the swings. She gets on her favorite swing and she goes back-and-forth one time in 2.8 seconds. What can we determine  from the question?-Mark all that apply. 
1. Millie’s wave length is 0.36 inches.
2. Millie’s frequency is 0.36 Hz.
3. Millie’s period is 0.36 seconds.
4. Millies wave length is 20 inches.
5. Millie’s frequency is 2.8 Hz.
6. Millie’s period is 2.8 seconds.
