Kingbird's World Toy Shop is an on-line toy store specializing in hand made stuffed animals. Kingbird's World sold 4000 Donny the Dragon stuffed toys during April and 6000 during May. Shipping costs for the two months were $11400 and $16200 respectively. Using these two months data, the shipping cost function is best estimated as O $2,40 x number of toys sold) + $1800 o 151.90% number of toys sold) 566400 O ($0.50 x umber of toys sold) 59400 O $2.85 number of toys sold) $2760