Peter is a recently retrenched Chef. In January this year, he decided to form a partnership with his old school friends, Mark and Tom and formed a coffee shop in Sydney CBD. Under the partnership agreement, Mark and Tom must consult Peter about any contracts entered into by the business. Mark and Tom have signed a contract to purchase new coffee machines for the business without Peter's knowledge and without express authority to do so. Explain whether the partnership is liable using relevant case law and the Partnership Act 1892 (NSW). Also explain the difference between joint and several liability