Describe the structure of an ionic crystal

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25