Anybody understand this i am really confused..

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

If f(x)= 3x+6 which of the following is the inverse of f(x)