My city's "Limin Fast Food Restaurant" tried to sell a certain set meal. After a period of trial sale, it was found that the cost of each set meal was 5 yuan, and the store's daily fixed expenditure was 6. (1) ① y = 4 (x-5)-6.

② According to the meaning of the question: 4(x-5)-6≥8, the solution: x≥8.5,

∵ 5 < x ≤ 1, and each set meal.

(2) when 5 < x ≤ 1, the sales volume is 4 (copies), x=1,

the maximum daily net income is y=4×1-26=14? (meta)

when x > 1, y=(x-5)? [4-(x-1) × 4]-6 =-4 (x-12.5) 2+165,

and ∵x can only be an integer, ∴ when x=12 or 13, the daily sales profit is the largest,

but in order to attract customers,

a: when the price of each package is 12 yuan, the daily net income is 164 yuan.