Carly earns money from walking dogs and answering surveys. She earns $7 a week for each dog she walks and $0.14 for each survey she answers. Last week, Carly answered 100 surveys and earned $35. Part A: Create an equation that will determine the number of dogs she walked. (3 points)

Part B: Solve this equation justifying each step with an algebraic property of equality. (6 points)

Part C: How many dogs did Carly walk last week? Round to the nearest whole dog.