A car salesman has 9 used cars for sale. They have a mean price of $6000. What is the total price of all 9 cars

Me because some of question i don’t understand

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.