Which is the graph of f(x) =4[1/2]x

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 (%)

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?