Need help on all three questions!

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

How can (square root of 25) ^2 be rewritten?

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.