exam Maths Puzzle Numerical Ability

Graph the linear equations:

1. Y > 1 and X < -2

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Can you help me solve my word problem...instructions...the cost in dollars of manufacturing (w)wing nuts is given by the xpression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is the average cost to manufacture one wing nut? Hi Can I have some help with the following problem?

Use the given information to find the constant of proportionality.
z varies inversely as t. If t = 10, then z = 9.