Ethan received his credit card statement in the mail and noticed an unfamiliar charge. he notified his bank immediately, and a month later the bank provided him with a copy of his signature previously authorizing the charge. what happens next? a. the charge is not billed and no payment is required. b. the charge will be due on the next bill. c. ethan must pay the charge, plus any late fees. d. the bank closes the account.

The state in which the manufacturing company you work for is located regulates the presence of a particular substance in the environment to concentrations ≤ x. recently-released, reliable research endorsed by the responsible federal agency conclusively demonstrates that the substance poses no risks at concentrations up to 5x. your company has asked you to consider designing a new process with a waste discharge stream containing up to 2x of the substance. based on the stated conditions, describe this possible.