Daniel and Ashley are bakers of challah bread. Daniel bakes at a steady rate of 8 loaves per hour. Ashley bakes loaves at the steady rate shown in the table below.

Who bakes Challah bread at a faster rate? How many loaves will Ashley have when Daniel has baked 48 loaves?

Oil leaked from a tank at a rate of liters per hour. The rate decreased as time passed and values of the rate at two-hour time intervals are shown in the table. Find lower and upper estimates for the total amount of oil that leaked out.

6. (8 marks) Market research has shown that if promotion of a product is stopped and other market conditions remain unchanged, sales of this product decline at a rate that is proportional to the current sales. At the end of January, Champion Sports was selling 1,000 tennis rackets per day when they stopped promotion of the product. Two months later, the sales of rackets have come down to 600 per day. What will the sales be in another 4 months?

6. (8 marks) Market research has shown that if promotion of a product is stopped and other market conditions remain unchanged, sales of this product decline at a rate that is proportional to the current sales. At the end of January, Champion Sports was selling 1,000 tennis rackets per day when they stopped promotion of the product. Two months later, the sales of rackets have come down to 600 per day. What will the sales be in another 4 months?