Timely Transport provides local delivery service for a number of downtown and suburban businesses. Delivery charges are based on distance and weight involved for each delivery: 23 cents per pound and 18 cents per mile. Also, there is a $28 handling fee per parcel. a. Develop an expression that summarizes delivery charges. (Enter your answers as dollar amounts to 2 decimal places. (x1 = weight, x2 = distance)) > Answer is complete but not entirely correct. y= $ (0.23) x1 + $ (0.18) x2 $ 28 + b. Determine the delivery charge for transporting a 38-pound parcel 18 miles. (Do not round your intermediate calculation. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. y $ 34.98