6. R Write and solve four different word problems for 21 + 4. a. In the rst word problem, the answer should be best expressed as S, remainder 1. Explain why this is the best answer. Interpret the meaning of \"5, remainder I\" in the context of the problem. b. In the second word problem, the answer should be best expressed as 5%. Explain why this is the best answer. What does the i mean in the con- text of the problem? c. In the third word problem, the answer should be best expressed as 5.25. Explain why this is the best answer. d. The answer to the fourth word problem should be 6 (even though 21 + 4 9-5 6). Explain why this is the best