I'm going crazy, someone help me​

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.