Marcie wants to enclose her yard with a fence. her yard is in the shape of a rectangle attached to a triangle. the formula for the area of the enclosed space is a = lw + 0.5bh. solve for b.
1 b = a divided by the quantity l times w plus 0.5 times h
2 b = the quantity a minus l times w all divided by 0.5 times h
3 b = a − lw − 0.5h
4 b = a + lw + 0.5h