Suppose the graph of the parent function Y = cotx) is vertically compressed to produce the graph of the function Y = a cotx),
but there are no reflections. Which describes the value of a?
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a <-1
O-1 O 0 O al

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 (%)