(a) The graph shows the cost, in dollars, of buying a length of fabric t metres long. [Figure showing a graph of Cost ($) vs Length of fabric (metres)]

1. (a)(i)Use the graph to find the cost of buying 3.8 m of fabric.[1]
2. (a)(ii)Samira buys k metres of fabric. She pays with a $20 note and receives $1.50 change. Use the graph to find the value of k.[2]
3. (b)Anita cuts 10m of fabric into three lengths to make a blouse, a skirt and a dress. The lengths of fabric needed to make the blouse, the skirt and the dress are in the ratio 6 : 8 : 11. Find the length of the fabric that is cut to make the dress.[2]
4. (c)The upper bound for the area of a rectangular piece of fabric is 8.8125m². The width of the piece of fabric is 2.3 metres, correct to the nearest 0.1 m. The length of the piece of fabric is d metres, correct to the nearest 0.1 m. Find the value of d.[3]

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