Apex please help

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec 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?

Can someone me and do the problem plz so i can understand it more better