Plz answer fast i give brainliest which algebraic expression represents “the product of a number and five”?

5 + n

5n

n – 5

5
_
n

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =