1 (a) Sara buys a new car. The cash price of the car is $4500. She can pay for the car using option A or option B. Which option is cheaper and by how much? (b) Sara’s car uses 5.2 litres of petrol for each 100 km she drives. Petrol costs $0.85 per litre. Sara drives 240 km. Calculate the cost of the petrol used for this journey. Give your answer correct to the nearest cent. (c) Sara pays a total of $322 for her car insurance. This total is made up of a basic charge plus 15% sales tax. Calculate the amount of sales tax that Sara pays.