I need someone tutor me with discrete mathematics:

Let the domain and range be the set of all real numbers. Which of the following characteristics describes the function f(x) = 6x-2?

Let F=(x|x is a multiple of 5) and T=(x|x is a multiple of 3) Which of the following numbers would NOT be a member of FUT?

LetM=(a,b,c,d) and N= (5,7,9,11,13) Which of the following is true for the function G=( (a,5), (b,7), (c,13), (D,9)?

LetA= (3,5,c,d,9), what is the size of this set?

Let M=(a,b,c,d) and N= (5,7,9,11,13)Which of the following sets of ordered pairs is NOT a function?

Let S=(x|x is a prefect square) Which of the following would NOT be a subset of S ?

LetU=(0,2,4,6,8,10,12,14,16,18,20), X=(0,4,8,16), and Y= (0,2,4,10,14,16,20) Find (Y X)^2