book Maths Puzzle Numerical Ability

please help with breakdown to simplet form:
7m-3m+4-32q

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book Other Question

Find the two remaining vertices of square ABCD that has A=(-2,1), B=(6,-5) and a vertex in quadrant III. 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?