Final answer:
Jessica's weekly commuting cost is £25. This includes her fuel costs based on a round trip distance of 15 miles per day for 5 days and daily parking fees, rounded to the nearest £1.
Step-by-step explanation:
The question asks us to calculate the weekly travel costs for Jessica, who commutes to work by car, including both fuel and parking expenses. To compute this, we must find the total number of miles she travels in a week, determine the amount of fuel used, convert the fuel consumption into the cost per litre, and then add the parking fees.
Jessica travels to work 5 days a week, covering 7.5 miles each way. Therefore, her daily commute is 15 miles (7.5 miles each way), and her weekly commute totals 75 miles (15 miles/day x 5 days).
With a fuel efficiency of 30 miles per gallon, Jessica uses 2.5 gallons per week (75 miles / 30 miles/gallon). The cost per gallon of fuel is calculated by multiplying the cost per litre (£1.14) by the number of litres in a gallon (4.55 litres), resulting in a cost of £5.187 per gallon. The total fuel cost for the week is then 2.5 gallons x £5.187/gallon = £12.9675.
Additionally, parking costs £2.50 per day, which adds up to £12.50 for 5 days. Finally, we sum the weekly fuel and parking costs to get the total weekly cost: £12.9675 (fuel) + £12.50 (parking) = £25.4675.
Rounded to the nearest £1, Jessica's weekly commuting cost is £25.