Please help me, i really don't understand this

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

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.