Solve the equation and check the solution. a minus 2 and one-half = 1 and one-half

A. a = 1
B. a = 3 and one-half
C. a = 4
D. a = 4 and one-half

Vertical angles must check all that apply

Ineed the answers for this one as well!

The length of a rectangular flower bed is 2ft longer than the width. if the area is 6ft, then what are the exact length and width? also find the approximate dimensions of the rectangle.