When Ajax Co. produced 3 units of output per? week, its total fixed cost was ?$150,150 and total variable cost was ?$4,545. When output increased to 4 units per? week, total fixed cost remained at ?$150,150 and total variable cost increased to ?$6,060.

When output was 4 units per? week, total cost was $?.

When output was 4 units per? week, average variable cost was ?$?.

When output was 4 units per? week, average fixed cost was ?$?.

When output was 4 units per? week, average total cost was ?$?.

The marginal cost of producing the fourth units was ?$?.

Can you please show the work, so I can understand how you got there?