The cost of producing x units of a certain commodity is C(x) = 1000 +5.70x + 7x2. What is the average rate of change of C with respect to x when the production
level is raised from x= 100 to x = 101?

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What expression is equivalent to (2x-1)(x-3)?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Find the distance between (7,-6) and (-3,-9)