Size 40 is the cheapest, because the formula to find lowest price of unit is dividing the price by the unit. so 5.49/24≈ 0.23, 8.00/40=0.2, 15.99/64≈ 0.25
K = 5 or k = 3
Hope it helps-,-
7 because if u add 4 and 3 that's what u end up with
That would be scary lol but I guess kinda fun ❤️