I need the answer as fast as i can get it!

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

Measures of the angle of r, 31 s (x+4) t (3x+9)

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers