You drive your car for 4.5 hours at an access speed of 70 miles per hour. how far did you go

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 (%)

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?