Acoin that has probability of heads equal to p is tossed successively and independently until a head comes twice in a row or a tail comes twice in a row. find the expected value of the

Need on this geometry question. explain how you did it.

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 (%)

What is the factor form of x^2-9x+14