Which equation can be simplified to find the inverse of y=2x^2?

How do i do this using elimination 2x+3y=12 x-y=6

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?