exam Maths Puzzle Numerical Ability

This is a 4 part question any help would be great.Thanks in advance.
Graph the following data:year 1989, 1990, 1991, 1992, 1993 and Median Home Cost $93,100; $97,500; $99,700; $10

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exam Other Question

Business and finance. The cost in dollars of manufacturing w wing nuts is given by
the expression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is
the average cost to manufacture one wing nut?

Thanks y=4x; y=4x-17