Can someone pls help

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

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?