Which system of equations can be used to find the number of 7-inch plates, x, and the number of 12-inch plates, y, that are in the cabinet?
A x + y = 140 ; 12x + 7y = 15
B 7x + 12y = 140 ; 7x + 12y = 15
C x + y = 15 ; 7x + 12y = 140
D x + y = 15 ; 12x + 7y = 140
Answer:C
Which system of equations can be used to find the number of 7-inch plates, x, and the number of 12-inch plates, y, that are in the cabinet?
A x + y = 140 ; 12x + 7y = 15 B 7x + 12y = 140 ; 7x + 12y = 15 C x + y = 15 ; 7x + 12y = 140 D x + y = 15 ; 12x + 7y = 140