Valle crucis cabins has 9 units for rent. In july, all units were rented for all 31 days of the month. The july utility bill was $2360. In February, 7 cabins were rented for 10 days each. The February utility bill was $688. In April, 8 cabins were rented for 14 days each and the monthly utility bill was $950. Use the high-low method to determine the estimated fixed cost component of the company's utility bill