If there are 12 eggs in a carton, how many are in 5 cartons?

In djkl, side jk measures 10.6 inches, side kl measures 7 inches, and side jl measures 5 inches. based on the information that is provided, which could be a correct set of angle measures for these sides? angle j = 23.2°, angle k = 33.5°, angle l = 23.2° angle j = 23.2°, angle k = 33.5°, angle l = 123.2° angle j = 123.2°, angle k = 23.2°, angle l = 33.5° angle j = 33.5°, angle k = 23.2°, angle l = 123.2°

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.