What are all of the solutions to the equation (cos 3θ)(cos θ) − 1 = (sin 3θ)(sin θ)?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?