Explain the difference between the statements x e x and a cx, where a = {x}

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

Asap (i need to finish this quick) graph complete the sequence of transformations that produces △x'y'z' from △xyz. a clockwise rotation ° about the origin followed by a translation units to the right and 6 units down produces δx'y'z' from δxyz.

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250