Select the algebra tiles and expression that correctly model the phrase. twice a number

2 boxes contain minus signs and 1 box contains x. The equation is 2 x.
2x
2 boxes contain x. The equation is 2 x.
2x
2 boxes contain plus signs and 1 box contains x. The equation is x + 2.
x + 2
2 boxes contain negative x. The equation is negative 2 x.
–2x