The cell membrane<span> is selectively permeable to ions and organic molecules and controls the movement of substances in and out of </span>cells. The basic function<span> of the </span>cell membrane<span> is to protect the </span>cell<span> from its surroundings.</span>
2x + 2 dollars, because you're adding x and x + 2
An octagon has 8 sides, a rotation of 45° (360°/8) will map the octagon onto its preimage. Answer is 8.
An equation for the sentence would be g + 7 = 12, where g is the unknown number of gallons.
