A company received an invoice for $2668.77 dated April 29 with terms 7/15, 3/30, 1/60. (a) If the invoice is paid on May 7, how much is to be paid? (b) If the invoice is paid on May 27, how much is to be paid? (c) If the invoice is paid on June 25, how much is to be paid? (a) The amount to be paid on May 7 is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (b) The amount to be paid on May 27 is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) (c) The amount to be paid on June 25 is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)