R=2.8 mm calculate the area of the circle

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?

Can some one explain this i got sent this. is this a threat i’m scared

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?