I need help on both parts pls help-

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Which value would be a solution for x in the inequality 47-4x< 7

The volume of a cone is 37x3 cubic units and its height is x units. which expression represents the radius of the cone's base, in units? 1 s o 3x o 6x obx 93x2