Emma wants to plant roses and tulips in her yard. If she would like to plant at least 50 of those flowers, but she wants to plant less than 20 tulips, which of the following systems of inequalities represents that situation? Let r = number of roses and t = number of tulips. A.
r + t ≤ 50
t 20
C.
r + t ≥ 50
t 20