Can someone break this down so I can better understand what is needed? Please! Expand (2x-4)^2 using the square of a binomial formula.

A) (x)^2+2(x)(4)+4^2
B) (2x)^2-2(2x)(4)+4^2
C) (2x)^2+2(2x)(4)-4^2
D) (x)^2-2(x)(4)-4^2

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Acone with volume 1350 m³ is dilated by a scale factor of 1/3. what is the volume of the resulting cone? enter your answer in the box. m³

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15