What is the mean of this set of average daily summer temperatures for a seven-day period for a certain city? (I selected A but it may be wrong, thats why im posting it here)

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?