Verify the identity sin^2x = cos^2x sec^2x-cos^2x

Which graph represents the parent function of y=(x+2)(x-2)

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Mrs. chibas is making chocolate chip cookies for her daughter's class. she bought a tub of chocolate chip cookie dough that contained 57.6 ounces of dough. if each cookie needs 1.2 ounces of dough, how many cookies can she make