Answer:
3.5 ft^2/hr
Explanation:
The unit rate in this case is expressed as ft^2/hr. [For illustration, assume it is the rate at which paint is applied to a surface, for example].
(7/8 ft^2)/((1/4) hr)
(7/8 )/(1/4) ft^2/hr
(7*4)/(1*8) ft^2/hr
(28)/(8) ft^2/hr
(7)/(2) ft^2/hr
(7/2) ft^2/hr or 3.5 ft^2/hr