Solve the system of equations 2x-7y=34 and x-y=12 by combining the equations.

(40 points) i need some . an answer definition is appreciated as well.

Ihave trouble finding the nth term of a linear sequence

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total