Explain why your rate of change for the cooldown. was a negative value

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

If value of cos330° is √3/2 then find tan165°.

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y