Here are the responses to the statements based on the information provided about Krystal and Desmond:
- Krystal and Dave have the same rate of change: True
- Krystal has more money saved than Desmond if they work the same number of hours: True
- Desmond needs to work 3 1/2 more hours than Krystal to have the same amount of money: False
- If you graph both Krystal's and Desmond's savings, both graphs would show a positive, linear scenario: True
Please let me know if you need further assistance!