please help me with these questions. I'll be testing tomorrow and i really need the answers of these questions.?

1. The equation y = x+3/x^2 - 4 is graphed in the standard (x,y) coordinate plane below. No point on the graph has which of the following x-coordinates?
2. The Wilson family sold a shipment of walnuts to a farming cooperative for $210 at the rate of $0.03 per pound. if their shipment averaged 12 walnuts per pound. Find the the total number of walnuts in the shipment?
3. Over a 7-day period at Phil's Fitness, the average attendance of the slowest day and busiest day was 247 members. The average of the other 5 days was also 247 members. The total attendance for the 7 day period at phil's fitness was how many members?
4. the sum of a sequence of consecutive odd numbers, where the smallest term is 1, is always a perfect square. For example, 1+3=2^2 and 1+3+5+7=4^2. One of the sequences described above has a sum of 144. What is the largest odd number in the sequence?
Please explain how you get your answers. Thanks in advance!