Rebecca wanted to buy a book at the book store for $3.50, including tax. She reached into her wallet and pulled out a handful of coins, all dimes and quarters. Let d represent the number of dimes and q represent the number of quarters. Which expression below describes how many of each coin she would need to have in order to have at least $3.50? A. d + q < 3.5 B. 10q + 25d > 350 C. 10d + 25q > 350 D. 10d + 25q < 350

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.