Step-by-step explanation:

M=-3.5+2t, R=-3t when they meet M=R so
-3.5+2t=-3t
-3.5+5t=0
5t=3.5
t=0.7 hrs (42 minutes)
201.6 ounces
Hope this helps and please mark me as brainlest and like
A Cell is a function of a living thing I’m not sure how it’s made