What's the measure of X

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?

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?