2+3x<8;2 check whether the given number is a solution of the equation or inequality

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?

With number 11 ( show how you got the answer)

Predict which statements are true about the intervals of the continuous function. check all that apply